| Title | Records |
|---|
| 1 |
| [ in Journal of the Gower Society] | 1 |
| (Cave Diving ) | 1 |
| (Caves of Wales) | 1 |
| (Caves) | 1 |
| (Caving Books) | 1 |
| (Caving) | 1 |
| (Coal Mining) | 1 |
| (Cornish Mines) | 1 |
| (Gaping Gill) | 1 |
| (Mountaineering) | 2 |
| (Readers Digest) | 1 |
| (The Dalesman) | 1 |
| (Wide World Magazine) | 1 |
| 100 years of organized Hungarian Speleology | 1 |
| 10th International Congress of Speleology | 2 |
| 150 Let, Postojnske Jama 1818-1968 | 2 |
| 25 Jahre Neuere Beatushohlen Forschung | 1 |
| 2nd Exposicion Internacional de Espeleologia, Barcelona | 1 |
| 30 Years of Speleological Research in Hungary | 1 |
| 50 years of Texas Caving | 1 |
| 50th Anniversary Publication | 1 |
| A Barlangok Eghajlati Es Bioklima-Tologiai Sajatossagai | 1 |
| A Bibliography of British Karst | 1 |
| A Brief Introduction to China's Karst Research | 1 |
| A Cavers View of the Clydach River | 1 |
| A Caving manual | 1 |
| A Classification of Igneous Rocks and Glossary of Terms | 1 |
| A Deep Natural Cavern at Westleigh | 1 |
| A Dictionary of Karst and Caves | 1 |
| A Dictionary of Spanish/American/Portuguese Mining Terms | 1 |
| A Dynamic Stratigraphy of the British Isles | 1 |
| A Gazetteer of the Welsh Slate Industry | 1 |
| A Gazetteer to The Metal Mines of Scotland | 1 |
| A Glossary of the Mining & Mineral Industry | 1 |
| A Guide to The Control of Explosives 1991 | 1 |
| A Guide to The Mines of West Cornwall | 2 |
| A Guide to Torquay Nat.Hist.Mus. with Plan & Notes on Kents Cav. | 1 |
| A Guide to the mines of West Cornwall | 1 |
| A History of Gaping Ghyll and Ingleborough Cave | 1 |
| A History of Lead Mining in the Pennines | 1 |
| A History of Sygun | 1 |
| A History of Tin Mining and Smelting in Cornwall | 1 |
| A History of the Exploration of Swildons Hole | 1 |
| A List of Mines in North Devon and West Somerset | 1 |
| A Man Deep in Mendip | 1 |
| A Manual on the Hydraulic Ram for Pumping Water | 1 |
| A Mendip Cavers Ropework Guide | 1 |
| A Note on The Correlation of the Kerry/Cork Glaciations | 1 |
| A Petrological Study of the Limestones of the Moine Series of Ardgour, Ayrshire | 1 |
| A Philippine Cave Index and Bibliography | 1 |
| A Pictorial History of Swildons Hole | 1 |
| A Preliminary Report on the Karst Morphology of the Nullarbor Plains by J.N Jennings | 1 |
| A Reassessment of Opencast Coalmining | 1 |
| A Short History of Kents Cavern | 1 |
| A Short History of the Scottish Coalmining Industry | 1 |
| A Study of Limestone Solution in NW Clare, Eire | 1 |
| A Study of the Shapes & Dist.of The Lead Deps.in The Pennine LS | 1 |
| A Succinct Account of the Lime Rocks of Plymouth | 1 |
| A Tale of Cheddar Caves 100 Years Ago | 1 |
| A Three Peaks Up and Under | 1 |
| A Tour to The Caves | 1 |
| A Travers le Karst | 1 |
| A Treatise on Mine Surveying | 2 |
| A Visitors Guide to Underground Britain | 1 |
| A bedside book for older Cavers | 1 |
| A dictionary of Karst & Caves | 1 |
| A glimmering in darkness | 2 |
| A history of the Fuller's earth mining industry around Bath | 1 |
| A la Decouverte des Hommes Prehistorique | 1 |
| Abissi Delle Alpi Apuane | 1 |
| Aboriginal Paintings from Australia | 1 |
| About Castleton | 1 |
| Access to Caves | 1 |
| Acta Biologica 2,Knjiga 30 | 1 |
| Acta Carsologica | 1 |
| Acta Geogaphica | 1 |
| Acta Geologica Vol 3,Knjiga 31 | 1 |
| Activities Newsletter | 1 |
| Adelina Patti a brief account of her life | 1 |
| Advanced First Aid for Cave Rescue | 1 |
| Adventure underground: the story of the world's great tunnels | 1 |
| Adventurers Slopes | 1 |
| Adventures Underground | 1 |
| Agen Allwedd - S2002 | 1 |
| Aggteleki Karsztvidek | 1 |
| Agua 96 cave diving expedition | 1 |
| Air Pollution in Mines | 1 |
| All that Remains | 1 |
| Alone to Everest | 1 |
| Alpi Giule | 1 |
| Alpine Caving Techniques | 1 |
| Alpiniste Complet | 1 |
| Also Hegyi Zsombolyatlasz | 1 |
| Altamira | 1 |
| American Caves and Caving | 2 |
| American Caving Accident | 1 |
| An Account of the Caves of Ballybunian | 1 |
| An Exploration Journal of Llangattwg Mountain CSS | 1 |
| An Initial Estimate of the Speed of Limestone Solution in Co.Clare | 1 |
| An Introduction to British Limestone Karst Environments | 1 |
| An Introduction to Cave Photography | 1 |
| An Introduction to Cave Surveying | 1 |
| An Introduction to Technical Diving | 1 |
| An Unconventional Guide to The Caverns of Castleton | 1 |
| Ancient Castleton Caves | 2 |
| Andromeda | 1 |
| Angraben uber Jugooslawien | 1 |
| Annali | 1 |
| Annapurna | 1 |
| Annual Journal Red Dragon | 1 |
| Annual Report | 3 |
| Antheo | 1 |
| Anthracite Open Pit Mining, A Feasability Study | 1 |
| Applied Geophysics | 1 |
| Archaeologia Cambrensis | 1 |
| Architecture des Temps Jeita | 1 |
| Arthur Woolf,The Cornish Engineer | 1 |
| Ashton & Reid on Clubs & Societies | 1 |
| Asi es mi Pais | 1 |
| Aspects of the History of Slovene Karst 1545 - 2008 | 1 |
| Aspects of the Pleistocene History of North Mayo | 1 |
| Atlas Great Caves of the World | 1 |
| Atlas Souterrain de la Provence et des Alpes de Lumiere | 1 |
| Atlas der Dachstein-Mammuthohle | 1 |
| Atlas des Grands Gouffres du Mond 1972 | 1 |
| Atlas des Grands Gouffres du Mond 1979 | 1 |
| Atlas des Grands Gouffres du Monde | 2 |
| Atlas des Grottes de Savoie [Packs of separate maps | 1 |
| Atlas of the Berry Head Caves | 1 |
| Atti | 1 |
| Atti E Memorie | 1 |
| Attivata | 1 |
| Au Coeur des Pyrenees | 1 |
| Au Pays des Eaux Folles | 1 |
| Au Pays du Grand Silence Noir | 1 |
| Au-Dela des Siphons | 1 |
| Australian Caves | 1 |
| Australian Karst Index 1985 | 1 |
| Australian Speleo Abstracts | 1 |
| Australian Speleological Federation, Proc of the 8th Bienn Conf | 1 |
| Avec Michel Siffre dans le Gouffre du Scarasson | 1 |
| Aventura por la comarca del Ason | 1 |
| Aventuras en el Mundo de las Tinirblas | 1 |
| Aventuri Sub Pamint | 1 |
| Axbridge Caving Group and Archaeological Society | 1 |
| BCA Newsletter | 1 |
| BCRA Cave and Karst Science | 1 |
| BCRA Explosives User Group | 1 |
| Babar and the Professor | 1 |
| Back Home at Last | 1 |
| Back in Time for Tea and Medals | 1 |
| Bad Ground, inside the Beaconsfield Mine Rescue | 1 |
| Barlangvilag | 1 |
| Basic Underwater Cave Surveying | 1 |
| Bat Investigations on Llangattwg 1983/84 CSS | 1 |
| Bath Stone Quarries | 1 |
| Batu Caves | 2 |
| Beam Engines | 1 |
| Beautiful British Columbia | 2 |
| Beautiful Kweilin | 1 |
| Belfry Bulletin | 1 |
| Beneath The LakeLand Fells | 1 |
| Beneath The Mountains | 1 |
| Beneath our Feet, The caves & Limestone scenery of the North of Ireland | 1 |
| Beneath the Cloud Forests | 1 |
| Beneath the Surface | 1 |
| Bergwerke & Hohlen im Harz | 1 |
| Berliner Hohlenkundliche Berichte | 1 |
| Bernese Area | 1 |
| Beyond Mammoth cave | 1 |
| Beyond Time | 1 |
| Beyond my own lamps beam | 1 |
| Bibl.& Index of Geol.& Allied Sciences for Wales & Welsh Borders | 1 |
| Bibliographie | 1 |
| Bibliographie Speleologique Belge 1907-1964 | 1 |
| Bibliographie Speleologique Belge 1965-1969 | 1 |
| Bibliographie Speleologique Belge 1970-1974 | 1 |
| Bibliographie Speleologique de L'Irak | 1 |
| Bibliographie zur Karst Und Hohle in Deutschland, 1963 | 1 |
| Bibliographie zur Karst Und Hohle in der Bundes.Deutsch.1970-72 | 1 |
| Bibliographie zur Karst Und Hohle in der Bundes.Deutsch.1973-75 | 1 |
| Bibliographie zur Karst Und Hohle in der Bundes.Deutsch.1980-81 | 1 |
| Bibliographie zur Karst Und Hohlenkunde in Deutschland 1982-83 | 1 |
| Biological Supplement | 1 |
| Biospeleologie | 1 |
| Biospeleology, The Biology of Cavernicolous Animals | 1 |
| Bir al Ghanam Karst Study Project | 1 |
| Birds of Britain and Europe | 1 |
| Black Country Pits | 1 |
| Blind White Fish in Persia | 1 |
| Boletin | 3 |
| Bone, Tooth & Horn Tools of Palaeolithic Man | 1 |
| Botallack | 1 |
| Botany | 1 |
| Box Freestone Mines | 1 |
| Box Stone Mines | 1 |
| Bramabiau. Sur L'Etrangete Souterraine | 1 |
| Brecon Beacons National Park Plan 3rd Edition 1993-1998 | 1 |
| Brecon Beacons National Park Scenery, Geology | 1 |
| Brecon Beacons News | 1 |
| Breconshire Birds Annual Report 2017 Vol 7 No 2 WTSWW | 1 |
| Breconshire Naturalist | 1 |
| Brigshaw Underground | 1 |
| Brindley at Wet Earth Colliery | 1 |
| Britain BC | 1 |
| Britain Underground | 1 |
| Britain's Old Metal Mines | 3 |
| British Caenozoic fossils | 1 |
| British Caves and Potholes | 1 |
| British Caving | 4 |
| British Karst Research Expedition to The Himalaya | 1 |
| British Karst Research Expedition to The Himalaya 1970 | 1 |
| British Mesozoic fossils | 1 |
| British Mining | 1 |
| British Mining Fields | 1 |
| British Palaeozic fossils | 1 |
| British Quarrying and Slag Federation, Members 1972 | 1 |
| British Quaternary Studies | 1 |
| British Regional Geology South Wales | 1 |
| British Regional Geology The Grampian Highlands | 1 |
| British Regional Geology, North Wales | 1 |
| British Regional Geology, South Wales | 3 |
| British Regional Geology, South West England | 1 |
| British Regional Geology, The Pennines and Adjacent Areas | 1 |
| British Regional Geology. South Wales. | 1 |
| Budapest cave capital | 1 |
| Buletin Stiintific | 1 |
| Bulletin | 17 |
| Bulletin Association Francaise de Karstologie | 1 |
| Bulletin Association Speleologique Nimoise | 1 |
| Bulletin Comite National de Speleologie | 1 |
| Bulletin D'Information | 1 |
| Bulletin Groupe Speleologique de Bourg en Bresse | 1 |
| Bulletin Illustre | 1 |
| Bulletin Mendip Caving Group MCG | 1 |
| Bulletin Periodique,C.N.S. | 1 |
| Bulletin Societe Speleologique et Prehistorique de Bordeaux | 1 |
| Bulletin Spele Aude | 1 |
| Bulletin Speleo Club des Causses | 1 |
| Bulletin de Liason, Speleo Club de Lutece | 1 |
| Bulletin de la Societe Serbe de Geographie | 3 |
| Bulletin de liason du CDS 06, Comite de spel des Alpes Maritimes | 1 |
| Bulletin of Karst | 1 |
| Bulletin of The Geological Survey of Great Britain, No 14 | 1 |
| Bulletin of the Cave Exploration Group of East Africa Vol 1 | 1 |
| Bulletin of the Geological Society of America Vol 41 | 1 |
| Bulletin of the Geological Society of China, Vol 13 N0 3 | 1 |
| Bulletin of the Geological Survey of Great Britain, No 14 | 1 |
| Bumbling in the Dark | 1 |
| Bungonia Caves | 1 |
| Burnley Review | 1 |
| Butterflies and moths, a field Guide in colour | 1 |
| CCC,The History of the Cornish Copper Company | 1 |
| CDG Newsletter | 1 |
| CNCC Newsletter | 1 |
| CNCC Rigging Guide Vol 1 Version 3 | 1 |
| CNCC Rigging Guide Vol 2 Version 3 | 1 |
| CNCC eco rigging Guide No 2 | 1 |
| CNCC eco rigging Guide No 3 | 1 |
| CNCC rigging Guide Vol 1 [Compilation of original CNCC Rigging Guides Nos 1-3] | 1 |
| Cambrian Caving Council Newsletter CCC | 1 |
| Canadian Caver | 1 |
| Cango | 2 |
| Canyons du Vercors et Alentours | 1 |
| Caradon and Looe, The Canal, Railways and Mines | 1 |
| Carboniferous Succession at Loughshinny | 1 |
| Cardabelle, Herault | 1 |
| Cardiganshire its Mines & Miners | 1 |
| Carlsbad Cavern The Early Years | 1 |
| Carlsbad Caves and a Camera | 2 |
| Carnon | 1 |
| Carte Hydrogeologique des Grands Causses | 1 |
| Cascades, Gorges et canyons dans le Haut Jura | 1 |
| Castellana | 1 |
| Casteret | 1 |
| Castleguard | 1 |
| Cataleg Espeleologic de Catalunya, Vol 1 | 1 |
| Cataleg Espeleologic de Catalunya, Vol 2 | 1 |
| Cataleg Espeleologic de Catalunya, Vol 3 | 1 |
| Catalogo Espeleologico de Macizo de Garraf, Vol 1 | 1 |
| Catalogo Espeleologico de Macizo de Garraf, Vol 2 | 1 |
| Catalogo Espeleologico de Macizo de Garraf, Vol 3 | 1 |
| Catalogo Espeleologico de la Provincia de Barcelona | 1 |
| Cathedral showcave official Guide | 1 |
| Causse Toujours No.2 | 1 |
| Causses et gorge du Tarn | 1 |
| Cave Art | 1 |
| Cave Boy | 1 |
| Cave Conservation and Restoration 2006 Edition | 1 |
| Cave Deposits & Palaeoclimatology | 1 |
| Cave Deposits and Palaeoclimatology | 1 |
| Cave Diving Notes | 1 |
| Cave Diving , The CDG Manual | 2 |
| Cave Diving Magazine | 1 |
| Cave Exploration in Canada | 1 |
| Cave Exploration in Canada | 1 |
| Cave Exploring | 1 |
| Cave Fauna | 1 |
| Cave Hunting | 1 |
| Cave Hunting Holidays in Peakland | 1 |
| Cave Hunting Holidays in The Peakland | 1 |
| Cave Illustrations Before 1900 | 1 |
| Cave Life evolution and ecology | 1 |
| Cave Mapping A Systematic Approach | 1 |
| Cave Minerals | 2 |
| Cave Minerals of the World | 1 |
| Cave Nature and Culture | 1 |
| Cave Notes | 3 |
| Cave Notes Co.Clare | 1 |
| Cave Notes: County Clare Ireland | 1 |
| Cave Paintings of the Early Stone Age | 1 |
| Cave Passages | 1 |
| Cave Pearls of Meghalaya Vol 1 Pala Range and Kopili Valley [CD included] | 1 |
| Cave Photography | 1 |
| Cave Photography A Practical Guide | 1 |
| Cave Rescue | 2 |
| Cave Rescuers Manual | 1 |
| Cave Safe 2 | 1 |
| Cave Science | 1 |
| Cave Science BCRA | 1 |
| Cave Studies | 1 |
| Cave Surveying | 1 |
| Cave Surveys from the Yorkshire Dales | 1 |
| Cave and Quarry | 1 |
| Cave craft | 1 |
| Cave men new and old | 1 |
| Cave of Loltun, Yucatan | 1 |
| Cavern Researches | 1 |
| Cavern of Crystal Giants | 1 |
| Cavern of the dragon | 1 |
| Cavernas O Fascinante Brasil Subterraneo | 1 |
| Cavernas do Parana | 1 |
| Cavernas y Minas patrimonio subterraneo de Cantabria | 1 |
| Caverne Ornee de Bara Bahau | 1 |
| Cavernes | 1 |
| Cavernes des Bauges | 1 |
| Cavernes en Perigord | 1 |
| Cavernous depths of Yorkshire | 1 |
| Caverns & Mines of Matlock Bath Vol 1 | 1 |
| Caverns Measureless to Man | 2 |
| Caverns of Virginia | 1 |
| Caverns of West Virginia | 2 |
| Caves | 1 |
| Caves & Karst of the Yorkshire Dales | 1 |
| Caves An Anthology | 1 |
| Caves Beyond Time | 1 |
| Caves Cliffs and Canyons | 1 |
| Caves Graves and Catacombs | 1 |
| Caves and Cave Diving | 2 |
| Caves and Cave Life | 1 |
| Caves and Caverns of the Peakland | 2 |
| Caves and Caving | 7 |
| Caves and Caving in Britain | 1 |
| Caves and Conservation | 2 |
| Caves and Karst | 1 |
| Caves and Karst Vol 13 No 5 | 1 |
| Caves and Karst Vol 14 No 1 | 1 |
| Caves and Karst Vol 14 No 2 | 1 |
| Caves and Karst of Switzerland | 1 |
| Caves and Karst of the Brecon Beacons National Park | 1 |
| Caves and Karst of the Peak District | 1 |
| Caves and Karst of the USA | 1 |
| Caves and Karst of the Yorkshire Dales | 1 |
| Caves and Karst of the Yorkshire Dales Vol 1 | 1 |
| Caves and Karst of the Yorkshire Dales Vol 2 | 1 |
| Caves and Karsts of Southern England and South Wales | 1 |
| Caves and Speleology in Bulgaria | 1 |
| Caves and Swallets of the River Manifold | 1 |
| Caves and the marvellous world beneath us | 2 |
| Caves beyond Time | 1 |
| Caves in Czechoslovakia | 1 |
| Caves in Wales and The Marches | 3 |
| Caves in the Cong Area of Galway & Mayo | 1 |
| Caves in the Desert | 1 |
| Caves in the Tralee District, Co.Kerry | 1 |
| Caves of Adventure | 2 |
| Caves of Assynt | 1 |
| Caves of County Clare | 2 |
| Caves of County Clare and South Galway | 2 |
| Caves of Derbyshire | 3 |
| Caves of Devon | 1 |
| Caves of Gower | 1 |
| Caves of Indiana | 1 |
| Caves of Malta | 1 |
| Caves of Missouri | 1 |
| Caves of Mulu | 2 |
| Caves of Mulu '80 | 2 |
| Caves of North-East Wales | 1 |
| Caves of Northern Derbyshire, Part 1, Eldon Hill | 1 |
| Caves of Northern Derbyshire, Part 2, Giants-Oxlow System | 1 |
| Caves of Northern Derbyshire, Part 3, Perryfoot/Coalpithole | 1 |
| Caves of Northern Derbyshire, Part 4, Rushup Edge Swallets | 1 |
| Caves of Northern Derbyshire, Part 5, Treak Cliff Hill | 2 |
| Caves of Skye | 1 |
| Caves of South Wales | 6 |
| Caves of The Peak District | 1 |
| Caves of Thunder | 1 |
| Caves of Virginia | 1 |
| Caves of the Bristol Region | 1 |
| Caves of the Canadian Rockies & Columbia Mountains | 1 |
| Caves of the Mellte Valley | 2 |
| Caves of the Peak District | 1 |
| Caves, Exploring Hidden Realms | 1 |
| Caves; Processes, Development, Management | 1 |
| Caving | 4 |
| Caving Expeditions | 2 |
| Caving International | 1 |
| Caving Practice and Equipment | 2 |
| Caving Reports | 1 |
| Caving Technical Guide | 1 |
| Caving and Potholing | 2 |
| Caving in Australia | 1 |
| Caving in Italy | 1 |
| Caving in Norway | 1 |
| Cavites Majeure du Plateau de Mejannes-le-Clap | 1 |
| Celebrated American Caverns | 1 |
| Celebrated American Caves | 1 |
| Celestine | 1 |
| Centenary History of S.Staffs. & Warwicks. Inst.of Mining Engrs | 1 |
| Ceskosloveski Kras | 1 |
| Cesky Kras | 1 |
| Characteristics of Limestone Solution in the Southern Rocky Mountains and Selkirk Mountains, Alberta and British Columbia | 1 |
| Chartreuse Souterraine | 2 |
| Cheddar Caves | 1 |
| Cheddar Gorge | 1 |
| Chwareli a Chwarelwyr | 1 |
| Ciencia Al Dia | 1 |
| Cinerary Urns from Kirk Ireton | 1 |
| Clair-Obscur | 1 |
| Clamouse | 1 |
| Clamouse cavern | 1 |
| Classic Darksite Diving | 1 |
| Classic caves of the Peak district | 1 |
| Classic walks the most spectacular walks in the world | 1 |
| Classical Karst and Istria | 1 |
| Cliff Castles and Cave Dwellings of Europe | 1 |
| Climb to The Lost World | 1 |
| Climbing Blind | 1 |
| Coal Dust and Cave Mud | 1 |
| Coal Mining | 1 |
| Coal Mining in the Llanelli area | 1 |
| Coal Mining in the Llanelli area, vol 2 1830-1871 | 1 |
| Coal Mining, Report of the Technical Advisory Committee | 1 |
| Coal Petrology | 1 |
| Coal Society | 1 |
| Coal: Yesterday, To-day, & Tomorrow | 1 |
| Coalbrookdale Coalfield, Catalogue of Mines and Mining Bibliog. | 1 |
| Coast and Karst in Istria Rossa | 2 |
| Codification of Bibliographical Card Index's | 1 |
| Collieries of South Wales : 1 | 1 |
| Colliers and I | 1 |
| Colliery Yearbook & Coaltrades Directory 1940 | 1 |
| Colliery Yearbook & Coaltrades Directory 1950 | 1 |
| Colloque International de Speleologie | 1 |
| Coloriez Lascaux en Perigord | 1 |
| Coming to South Wales Caves | 1 |
| Comment on Descend sous Terre | 1 |
| Commission de Topographie et de Toponimie Bulletin | 1 |
| Comms.sobre el Carst Provincio de Murcia, No 2 | 1 |
| Compass Points | 1 |
| Compte Rendu | 1 |
| Computers for Libraries | 1 |
| Comunicaciones sobre el Carst en la Provincia de Murcia 1972-73 | 1 |
| Coniston Copper Mines | 1 |
| Contributions to The Study of Karst | 1 |
| Contributions to the study of Karst | 1 |
| Copper Mining in Cornwall and Devon | 2 |
| Cornish Engine Houses | 1 |
| Cornish Mining | 2 |
| Cornish Mining Notes | 1 |
| Cornish Pumping Engines | 1 |
| Cornwall its Mines and Miners | 1 |
| Cornwall's Central Mines, The Northern District 1810-1895 | 1 |
| Cornwall's Central Mines, The Southern District 1810-1895 | 1 |
| Cornwall's Mines and Miners | 1 |
| Cornwall's Old Mines | 1 |
| Corpus Cavernico Mayoricense | 1 |
| Council of Southern Caving Clubs Handbook | 2 |
| Countryside Council for Wales Annual Report 1992-1993 | 1 |
| Creeping How to overcome narrow passages in caves | 1 |
| Creg Journal BCRA | 1 |
| Crewe Climbing and Potholing Club CCPC | 1 |
| Crypts Caves and Catacombs | 1 |
| Crystal Structures and Cation Sites of the Rock Forming Minerals | 1 |
| Cuadernos de Espeleologia | 2 |
| Cuadernos del Ason | 1 |
| Cuceritorii Intunericului | 1 |
| Cuevas y Carsos | 1 |
| Cuevas y Pictografias | 1 |
| Cumberland Iron | 1 |
| Cwmdwr 2 | 1 |
| Cwmorthin Slate Quarry | 2 |
| Cyprus Caving History | 1 |
| Cyrenaiken | 1 |
| D.C. Speleograph | 1 |
| DYO Dan Yr Ogof & Pant Mawr- S2016 - Sketch Map of Dan Yr Ogof and Pant Mawr areas showing Caves, Geology and Drainage | 1 |
| DYO Dan Yr Ogof & Pant Mawr- S2017 - Sketch Map of Dan Yr Ogof and Pant Mawr areas showing Caves, Geology and Drainage | 1 |
| DYO Dan Yr Ogof & Pant Mawr- S2018 - Sketch Map of Dan Yr Ogof and Pant Mawr areas showing Caves, Geology and Drainage | 1 |
| DYO Dan Yr Ogof & Pwll Dwfn - S2008 - Longitudinal Sections Related to Lithology | 1 |
| DYO Dan Yr Ogof & Pwll Dwfn - S2029 - Longitudinal Sections Related to Lithology | 1 |
| DYO Dan Yr Ogof - Ogof Yr Esgyrn - The Bone Cave - S2014 | 1 |
| DYO Dan Yr Ogof - S2005 - High and Mighty Series | 1 |
| DYO Dan Yr Ogof - S2006 - Provisional Plan | 1 |
| DYO Dan Yr Ogof - S2007 - Extensions | 1 |
| DYO Dan Yr Ogof - S2009 - Dan Yr Ogof Extensions | 1 |
| DYO Dan Yr Ogof - S2013 - Provisional Plan | 1 |
| DYO Dan Yr Ogof - S2015 - Geology, Drainage and Structure in the Dan Yr Ogof Catchment Area | 1 |
| DYO Dan Yr Ogof - S2019 - Geology, Drainage and Structure in the Dan Yr Ogof Catchment Area | 1 |
| DYO Dan Yr Ogof - S2020 - Plan of Dan Yr Ogof One and Two | 1 |
| DYO Dan Yr Ogof - S2021 - New Series | 1 |
| DYO Dan Yr Ogof - S2025 | 1 |
| DYO Dan Yr Ogof - S2030 | 1 |
| DYO Dan Yr Ogof - S2031 | 1 |
| DYO Dan Yr Ogof - S2032 - Geology, Drainage and Structure in the Dan Yr Ogof Catchment Area | 1 |
| Dan yr Ogof | 1 |
| Dan yr Ogof showcave official Guide | 1 |
| Dan yr Ogof, the jewel of Welsh caves | 1 |
| Danmarks Minedrift | 1 |
| Dark Life | 1 |
| Dark World | 1 |
| Dartmoor Mines | 1 |
| Dauphine Souterrain | 1 |
| De la Bourne a Herbouilly | 1 |
| Decouvrir le Monde Souterrain | 1 |
| Deep Well Drilling | 1 |
| Deep down | 1 |
| Deep into Blue Holes | 1 |
| Deep secrets | 1 |
| Denudation in Limestone Regions | 1 |
| Deportes de Aventura | 1 |
| Der Frankische Hohlenspiegel | 1 |
| Der Schlaz | 1 |
| Derbyshire Caving Association DCA | 1 |
| Derbyshire Lead and Lead Mining | 1 |
| Derbyshire Leadmining Through The Centuries | 1 |
| Derbyshire Miscellany | 1 |
| Descent | 2 |
| Descente Sportive, Gorges et Canyons | 1 |
| Development of the Canyons of the South Nahanni River, N.W.T. | 1 |
| Devils Advocate | 1 |
| Devon Great Consols | 1 |
| Dictionary of Karst & Caves | 1 |
| Die Dachstein-Rieseneishohle | 1 |
| Die DachsteinHohlen | 1 |
| Die Eisriesenwelt im Tennengebirge | 1 |
| Die Erdmanns-Hohle,Haseler Hohle | 1 |
| Die Falkensteiner Hohle | 1 |
| Die Grabenstetter Grobhohle | 1 |
| Die Hermannshohle | 1 |
| Die Hermannshohle bei RubeLand | 2 |
| Die Hohle | 1 |
| Die Hohlen Europas | 1 |
| Die Hohlen Niederosterreichs | 3 |
| Die Hohlen Salzburgs | 1 |
| Die Hohlen des Bezirkes Lilienfeld | 1 |
| Die Muhlbacquellhohle | 1 |
| Die Vetterhohle | 1 |
| Diff.e Data.del Fenomo Carsico Nella Penisola Sorrentina | 1 |
| Digging Up The Past | 1 |
| Dimensione Buio | 1 |
| Dincolo de Lumina | 1 |
| Discovering Caves | 1 |
| Discovering Lost Mines | 1 |
| Discussion Papers in Conservation | 1 |
| Dissertations | 1 |
| Distinction entre Trois Types D'eboulis Cryoclast.dans les Cav. | 1 |
| Diving at Work. Proposals for Regulations | 1 |
| Diving in darkness | 1 |
| Diving; Peak Cavern | 1 |
| Dix ans sous terre | 1 |
| Doing the Grand Canyon Blackheath | 1 |
| Dolcoath, Queen of Cornish Mines | 1 |
| Dolenjski Kras | 1 |
| Doolin St.Catherines Cave | 1 |
| Doolin-St.Catherines Cave | 1 |
| Downey's Cave - S2023 | 1 |
| Dragon cave diving expedition to mallorca 1996 | 1 |
| Drainage Systems of Wales & Adjacent Regions | 1 |
| Dunmore Cave,Co.Kilkenny | 1 |
| Dusseldorfer Geographische Schriften Heft 2 | 1 |
| Dylife | 2 |
| Dyliffe | 1 |
| E A Martel comptes rendus | 1 |
| E.A.Martel | 1 |
| ECO Resin Rigging Guide | 1 |
| Early man in Britain | 1 |
| Earth Science Conservation in Great Britain | 1 |
| East Surrey Underground | 2 |
| East Wheal Rose | 2 |
| Ebbor Gorge National Nature Reserve | 1 |
| Echo Cave:A Quatern.Chron.from E.Transv. | 1 |
| Effect of Knick Point Recession | 1 |
| El Guacharo | 1 |
| El Karst de Rasines, Cantabria | 1 |
| Elementary Surveying | 1 |
| Eli Simpson and the BSA | 1 |
| Elizabethan Copper | 1 |
| Emile G.Racovitza | 1 |
| En Franche-Comte Souterraine | 2 |
| En rampant | 1 |
| Encyclopedia of Caves | 1 |
| Encyclopedia of Caves and Karst Science | 1 |
| Encyclopedia of Magic and Superstition | 1 |
| Encyclopedia of caves and Karst science | 1 |
| Endins | 1 |
| Endurance | 1 |
| Engels Nederlands Woordenboek | 1 |
| Escalade dans le Lot climbing in the Lot | 1 |
| Escalades Souterraines | 1 |
| Espeleo Noticias | 1 |
| Espeleologia | 1 |
| Espeleotemas | 1 |
| Essays in Cornish Mining History No 1 | 1 |
| Essays in Cornish Mining History No 2 | 1 |
| Essential Sources in Cave Science | 1 |
| Estudia Geol.de la Caverna de Troskaeta | 1 |
| Estudia Geolog.de la Cueva de Troskaeta | 1 |
| Estudios | 1 |
| Ethnographisch Archaologische Zeitschrift | 1 |
| Euro Speleo | 1 |
| Euroventure | 1 |
| Evershed News | 1 |
| Evolution of the Bristol Channel-S.Wales | 1 |
| Excavation en el Caney del Castillo | 1 |
| Excavations at The Kesslerloch | 1 |
| Excavations at The Njoro River Cave | 1 |
| Excursiones Arqueologicas a Camaguey | 1 |
| Expedition 67 to The Gouffre Berger | 1 |
| Expedition Equipment Guide | 1 |
| Expedition Food & Rations Planning Manual | 1 |
| Expedition Gunung Lanno Malaysia | 1 |
| Expedition Report | 1 |
| Expedition in Deuschlands Schonste Hohle | 1 |
| Expedition report | 9 |
| Expedition report SWCC | 1 |
| Explokarst | 1 |
| Exploracions, Atlas de las Grandes Cavidades Espanolas 1987 | 1 |
| Exploration | 2 |
| Exploration Caussenarde | 1 |
| Explorations Journal ULSA | 1 |
| Explorations in Counties Sligo & Leitrim | 1 |
| Explorations souterraines dans la Region de Montpellier, 1944-45 | 1 |
| Exploring America Underground | 1 |
| Exploring American Caves | 2 |
| Exploring Caves | 3 |
| Exploring Cornish Mines | 1 |
| Exploring Wales by Car, Vagabond Book | 1 |
| Exploring the Limestone Landscapes of The Cumberland Ring | 1 |
| Exploring the Limestone Landscapes of Upper Wharfedale | 1 |
| Exploring the Limestone Landscapes of the Burren & Gort Lowlands | 1 |
| Exploring the Limestone Landscapes of the Peak District | 1 |
| Exploring the Limestone Landscapes of the Three Peaks and Malham | 1 |
| Exploring the Limestone caves of Devon | 1 |
| Explosions Their Anatomy and Destructiveness | 1 |
| Explosives | 1 |
| Explosives as an Aid to Cave Exploration | 1 |
| Facatativa, Santuario de la Rana | 1 |
| Fairy Cave Quarry | 1 |
| Famous Caves and Catacombs | 1 |
| Famous caverns and grottoes | 1 |
| Farbung des Unterirdischen Abflusses | 1 |
| Fatally Flawed the quest to be deepest | 1 |
| Fauna Cavernicole del Savonese | 1 |
| Faune Cavernicole de la Suisse | 1 |
| Field Guide-Albuquerque to Carlsbad Caverns National Park | 1 |
| Fifty Typical Swedish Caves | 2 |
| First Aid Manual | 1 |
| First Aid manual | 1 |
| Fledermause | 1 |
| Focus on Bats,Their Conservation and the law | 1 |
| Folia Quaternaria | 1 |
| Folk tales from Abercrave | 1 |
| Fonctions des Cavernes Cretoises | 1 |
| Force Crag | 1 |
| Foreign Travellers in the Slovene Karst 1486 - 1900 | 1 |
| Foreign travellers in the Slovene Karst 1537 - 1900 | 1 |
| Fossils | 1 |
| Four hundred centuries of cave art | 1 |
| Fourth Colloque International de Speleologie | 1 |
| Fresh flowers for M'Lady | 1 |
| Fundgrube | 1 |
| Further Report on the Explorations at Dog Holes, Warton Crag, Lancashire, with Remarks on the Contents of Two adjacent Caves | 1 |
| Future of Non Ferrous Mining in Great Britain and Ireland | 1 |
| Gaping Ghyll and Clapham Cave | 1 |
| Gaping Gill | 2 |
| Gargas | 1 |
| Gash Breccias of South Pembrokeshire, Fossil Karst? | 1 |
| Gavarnie, les Grottes Glacees du Marbore | 1 |
| General Information BQSF | 1 |
| Genetic Relat.between Caves & Landforms in The Mammoth Cave Area | 1 |
| Geografia de Cuba | 2 |
| Geograpica | 1 |
| Geol.Society Special Report No 7, Dinantian Rocks | 1 |
| Geological Conservation Review Quaternary of Wales | 1 |
| Geological Excursions in Powys | 1 |
| Geological Excursions in South Wales and The Forest of Dean | 1 |
| Geological Handbook for The Wrens Nest Nat.Nature Res. | 1 |
| Geologiset kohteet | 1 |
| Geology Around Craig-y-Nos | 1 |
| Geology Explained in The Forest of Dean and the Wye Valley | 1 |
| Geology Explained in The Peak District | 1 |
| Geology and Physiography of the Kingston District, Jamaica | 1 |
| Geology in The Service of Man | 1 |
| Geology of Caves | 1 |
| Geology of the Yorkshire Dales National Park | 1 |
| Geology, Natural History and Pre-Historic Antiquities | 1 |
| Geomorphological Regions of Hungary | 2 |
| Geomorphology | 1 |
| Geomorphology & Caves | 1 |
| Geomorphology of Barber Cave, Cooleman Plain, New South Wales | 1 |
| Geomorphology of Punchbowl and Signature Caves, Wee Jasper, NSW | 1 |
| Georgia Underground | 1 |
| Geos | 1 |
| Geschichte der Hohlenforschung in Osterreich | 1 |
| Ghar Dalam, the cave, the museum & the garden | 1 |
| Ghar Parau | 2 |
| Giant Caves of Borneo | 1 |
| Glacial Geology of the Isle of Man | 1 |
| Glamorgan County Magazine | 1 |
| Glossaire des Sciences Minerales | 1 |
| Glossary of Karst Terminology | 1 |
| Gloucester Speleological Society GSS Newsletter | 1 |
| Goldmining in Western Merioneth | 1 |
| Gorges du Tarn | 1 |
| Gorneiras e son aigavers | 1 |
| Gouffre Berger | 2 |
| Gouffre berger premier 1000 | 1 |
| Gower Caves | 2 |
| Grabovaca | 1 |
| Grampian Speleological Group GSG | 1 |
| Grandes Cuevas y Simas de Espana | 2 |
| Grandes cuevas y simas del Medit. De Gibraltar a Catalunya No [With Audio visual CD] | 1 |
| Greenside | 1 |
| Grimes Graves, Weeting | 1 |
| Grottan | 1 |
| Grotte | 1 |
| Grotte Casteret | 1 |
| Grotte de Frace | 1 |
| Grotte e Abissi di Lombardi | 2 |
| Grotte e Storie Dell'Asia Centrale | 1 |
| Grottes & Gouffres en relief | 1 |
| Grottes & Karsts de France | 1 |
| Grottes de France | 1 |
| Grottes de Han | 1 |
| Grottes de Roumanie | 1 |
| Grottes et Algares du Portugal | 1 |
| Grottes et Avens de la Montagne de la Sellette | 1 |
| Grottes et Avens du Pays de Saint-Guilhem | 1 |
| Grottes et Canyons | 1 |
| Grottes et Gouffres | 1 |
| Grottes et Gouffres en Charente Maritime | 1 |
| Grottes et Scialets du Vercors | 1 |
| Grottes et cavernes | 1 |
| Ground Movement & Control at Collieries | 1 |
| Ground Rush | 1 |
| Groundwater Ecology | 1 |
| Grutas e pelciones | 1 |
| Guid Kaapland | 1 |
| Guide Book to The Historical Section of Mammoth Cave | 1 |
| Guide Speleo des Montes de Vaucluse | 1 |
| Guide de L'Aven d'Orgnac | 1 |
| Guide to Ajanta frescoes | 1 |
| Guide to The Coalfields 1948 | 1 |
| Guide to The Coalfields. 1968 | 1 |
| Guide to The Coalfields.1965 | 1 |
| Guide to The Kalik Bay & Muizenberg Mountains | 1 |
| Guide to The World Famous Gough's Caves | 1 |
| Guidelines for the leisure use of mines | 1 |
| Guizhou EXPE 86 | 1 |
| Gurnee Guide to American Caves | 1 |
| Han sur Lesse et ses Grottes | 1 |
| Handbook | 3 |
| Handbook of Line Communications | 1 |
| Hardrock Resources in The Craven District of Yorkshire | 1 |
| Harveys: 200 Years of Trading | 1 |
| Heaven below Earth | 1 |
| Helictite | 1 |
| Hereford Caving Club HCC | 1 |
| Hidrogeologija in Vodno Gospodarstvo Krasa | 1 |
| High Angle Rescue Techniques | 1 |
| High Heaven | 1 |
| Himalaya Underground,1976 | 1 |
| Histoires au dessous | 1 |
| Historic Cornish Mining Scenes Underground | 1 |
| History of Cave Science | 1 |
| History of Cave science | 3 |
| History of Coal Mining in the Amman Valley | 1 |
| History of the Primates | 1 |
| Hohlen & Hohlenkunde | 1 |
| Hohlen der Nordlichen Kalkalpen | 1 |
| Hohlen in Deutschland | 1 |
| Hohlen in Franken | 1 |
| Hohlenfuhrer Schwabische Alb | 2 |
| Hohlenkundeliche vereinsinformation Hallstatt Obertraun | 1 |
| Homes of Primeval Man | 1 |
| Hong Meigui Yunnan 2002 | 1 |
| Hong Meigui Yunnan Resurgences 2004 & Yunnan 2004 Exped report | 1 |
| Honister Slate, The History of a LakeLand Slate Mine | 1 |
| Hors du temps | 1 |
| How Underground Britain is Explored | 1 |
| How to Photograph Cars | 1 |
| Huanjiang 2009 | 1 |
| Hydrogeochem. of Groundwaters in The Derbyshire Dome | 1 |
| Hydrogeologie des Calcaires de Belg1que | 1 |
| Hydrology | 1 |
| Hydrology and Water Quality in The Central Kentucky Karst | 1 |
| Hydrology for Engineers | 1 |
| Hydrology of Limestone Karst,US Geological Survey No B36 | 1 |
| Hypothermia and Cold Stress | 1 |
| I Fenomeni Carsici e la Speleologia de Lazio | 1 |
| I Fenomeni Periglaciali in Italia | 1 |
| IGU Symposium on Karst Morphogenesis | 1 |
| IL Complesso Carsico di Piaggia Bella | 1 |
| INRA | 1 |
| Ice caves in France and Switzerland | 1 |
| Il Grottesco | 1 |
| Il Paesaggio degli Alti Lessini | 1 |
| Illustrated Guide to Wells & Glastonbury, Cheddar etc. | 1 |
| Illustrating Morph. Analysis of Karst with Examp. from New Guinea | 1 |
| Illustrirana Povijest Speleologije u Hrvatskoj | 1 |
| Ilustrirana Povijest Speleologije u Hrvatskoj | 1 |
| Images below | 1 |
| Images of Industry | 1 |
| Improvised Techniques in Mountain Rescue | 1 |
| In Der Hohlen Dieser Erde | 1 |
| Indescent | 1 |
| Indiana Department of Geology and Natural Resources | 1 |
| Indiana,Geology & Natural History | 1 |
| Indicative atlas of Radon in England & Wales | 1 |
| Industrial Archaeology of the Swansea Region | 1 |
| Info | 1 |
| Info FFS | 1 |
| Ingleborough Cavern | 1 |
| Ingleborough Cavern and Gaping Gill | 1 |
| Ingleborough and District | 1 |
| Insects of Britain and Northern Europe | 1 |
| Int.Spel.Conf.Problems of Speleological Research | 2 |
| International Caver | 1 |
| International Conference Baradla 150 | 2 |
| International Journal of Speleology | 1 |
| International Symposium of Karst Hydrology | 2 |
| Into the Lost World | 1 |
| Introduction to Geomorphology | 1 |
| Introductory words Salt Mine Hallstatt | 1 |
| Inventaire Speleologique des Alpes Maritimes | 2 |
| Inventaire Speleologique du Doubs | 2 |
| Inventaire des Cavites du Basin Versant du Bruyant | 1 |
| Inventaire des Cavites du Massif de la Sainte Baume | 1 |
| Inventaire Speleologique Du Doubs Tome 3 | 1 |
| Inventaire Speleologique Du Doubs Tome 4 | 1 |
| Inventaire Speleologique de la France, No 1 Jura | 2 |
| Inventaire Speleologique de la France, No 2 Alpes Maritimes | 1 |
| Inventaire Speleologique du Doubs | 1 |
| Investigaciones Carsologicas en Cuba | 1 |
| Investigations into the Microbial Populations of caves [PhD Thesis] | 1 |
| Ipoantropo | 1 |
| Ipogea | 1 |
| Irelande et Cavernes Anglaises | 1 |
| Irish Sources of Lime, Magnesia, LS, Dolomite & Brucite Marble | 1 |
| Irish Speleology | 1 |
| Iron in the Soul | 1 |
| Its only a game | 1 |
| Jahresheft | 1 |
| Jamaica Underground | 2 |
| Jamarska zveza Slovenije | 1 |
| Jamarsko drustvo Dimnice | 1 |
| James Lyon Widger | 1 |
| James Lyon Widger and Torbryan Caves | 1 |
| Jaskine Polskie | 1 |
| Jaskinie Polski 1 | 1 |
| Jaskinie Polski 2 | 1 |
| Jaskinie Polski 3 | 1 |
| Jeita | 1 |
| Jenolan Caves | 1 |
| Jeskyne | 1 |
| Jeskyne a Propasti v Ceskoslovensku | 1 |
| John Taylor, Mining Entrepreneur & Engineer | 1 |
| Jordan, Walks, Treks, Caves, Climbs & Canyons | 1 |
| Journal | 1 |
| Journal BNSSS | 1 |
| Journal Black Rose Caving Club BRCC | 1 |
| Journal Bradford Pothole Club BPC | 1 |
| Journal Cambridge University Caving Club CUCC | 1 |
| Journal Cerberus Spelaeological Society | 1 |
| Journal Craven Pothole Club CPC | 1 |
| Journal Cumbria Amenity Trust Mining Historical Society CATMHS | 1 |
| Journal Cwmbran Caving Club CCC | 1 |
| Journal Dorset Caving Group | 1 |
| Journal Eldon Pothole Club EPC | 1 |
| Journal Gritstone Club | 1 |
| Journal ISCA Caving Club ICC | 1 |
| Journal Kendal Caving Club KCC | 1 |
| Journal Lancaster University Speleological Society LUSS | 1 |
| Journal London University Caving Club | 1 |
| Journal Manchester University Speleological Society MUSS | 1 |
| Journal Mendip Caving Group MCG | 1 |
| Journal Mendip Nature Research Committee MNRC | 1 |
| Journal Moldywarps Speleological Group MSG | 1 |
| Journal Morgannwg Caving Club MCC | 1 |
| Journal Northern Pennine Club NPC | 1 |
| Journal Pinnacle Club | 1 |
| Journal Red Rose Cave and Pothole Club RRCPC | 1 |
| Journal Severn Valley Caving Club SVCC | 1 |
| Journal Sheffield University Speleological Society SUSS | 1 |
| Journal Shepton Mallet Caving Club SMCC | 1 |
| Journal Shropshire Caving and Mining Club SCMC | 1 |
| Journal Southsea Spelaeological Society | 1 |
| Journal Stafford Speleological Society | 1 |
| Journal Staffordshire Industrial Archaeology Society | 1 |
| Journal Stoke on Trent Pothole Club | 1 |
| Journal Sydney Speleological Society | 1 |
| Journal Technical Speleological Group TSG | 1 |
| Journal Teifi Valley Caving Group TVCC | 1 |
| Journal University College Swansea Caving Club UCSCC | 1 |
| Journal Wales Industrial Archaeology Society | 1 |
| Journal Wessex Cave Club WCC | 1 |
| Journal White Rose Pothole Club WRPC | 1 |
| Journal York Caving Club & North York Moors Caving Club | 1 |
| Journal Yorkshire Ramblers Club YRC | 1 |
| Journal Yorkshire Subterranean Society YSS | 1 |
| Journal of Cave & Karst Studies NSS | 1 |
| Journal of the Czechoslovak Geographical Society | 1 |
| Journees Felix Trombe | 1 |
| Journey to The Centre of the Earth | 1 |
| Journey to the Bottomless Pit | 1 |
| Karst | 2 |
| Karst & Caves of Great Britain | 1 |
| Karst Field Studies at Mammoth Cave,1989 | 1 |
| Karst GroundWater Investigations,Greece | 1 |
| Karst Hydrology and Water Resources | 1 |
| Karst Landform Anal.as Evid.in Transvaal | 1 |
| Karst Landforms | 1 |
| Karst Processes & Relevant Landforms | 1 |
| Karst Regions in Indonesia | 1 |
| Karst Topography in Sarawak | 1 |
| Karst Und Hohle 1982/83 | 1 |
| Karst Und Hohle 1984/85 | 1 |
| Karst Und Hohle 1986/87 | 1 |
| Karst Und Hohlen in Niederosterreich | 1 |
| Karst Und Hohlenkunde | 3 |
| Karst del Sudeste de Gorbea | 1 |
| Karst et Grottes | 1 |
| Karst in China | 1 |
| Karst of Ireland | 1 |
| Karst und Hohle | 1 |
| Karst und Hohlenkunde | 1 |
| Karst,Imp.Karst Regions of the N.Hemisph | 1 |
| Karszt es Barlang | 2 |
| Katalog Dogadanja | 1 |
| Katalog Kaniznich a Mapovych Publikaci | 1 |
| Kent and East Sussex Underground | 1 |
| Kents Cavern | 1 |
| Kents Cavern - its Origin and History | 1 |
| Kents Cavern its Origin and History | 1 |
| King Arthurs Cave | 1 |
| King Solomon's Caves, Nggela Island, Solomon Islands | 1 |
| Kleiner Fuhrer zu Hohlen um Muggendorf | 1 |
| Kleiner Hohlenfuhrer | 1 |
| Kobie | 1 |
| Kras | 1 |
| Kras I Speleogia | 1 |
| Krasovy sbornik | 1 |
| Krasy Slovenska | 1 |
| Kungur Ice Cave | 1 |
| Kurafid | 1 |
| L'Agendo 2004 | 1 |
| L'Anticamera Dell Inferno | 1 |
| L'Ariege et L'Andorre | 1 |
| L'Autre Padirac | 1 |
| L'Aven Armand | 1 |
| L'Aventure Souterraine du Perigord | 1 |
| L'Aventure Souterraine en Savoie | 1 |
| L'Inconnu Souterrain | 1 |
| L'aven armand | 1 |
| L'escalade en Ardeche climbing in the Ardeche | 1 |
| L'evolution souterraine | 1 |
| LIDE ZEME8 | 1 |
| La Bela Subtera Mondo | 1 |
| La Causse de Blandes et Les Gorges de la Vis | 1 |
| La Conservation des Cavernes Amenagees | 1 |
| La Cueva de Bellamar | 1 |
| La Dent de Croll et son reseau souterrain | 1 |
| La France ignoree des ardennes aux Pyrenees | 1 |
| La France ignoree sud est de la France | 1 |
| La Grotte de Han | 1 |
| La Grotte de Saint Marcel d'Ardeche [with DVD and loose survey] | 1 |
| La Montagne | 1 |
| La Montagne de la Seranne | 1 |
| La Mystere de la Henne Morte | 1 |
| La Sainte Baume Souterraine | 3 |
| La Speleo | 1 |
| La Speleologie | 3 |
| La Speleologie scientifique | 1 |
| La Spluga | 1 |
| La cote d'azur russ | 1 |
| La grotta di Belvedere di Carovigno | 1 |
| La plume et les gouffres | 1 |
| La saga de l'aven d'orgnac, Issirac | 1 |
| Labouche | 1 |
| Laichinger Hohlenfreund | 1 |
| Laichinger Tiefenhohle | 1 |
| Largest Cave System of the Czech Soc. Rep,in The Moravsky Kras | 1 |
| Las Cuevas con Arte Paleolitico en Cantabria | 1 |
| Lascaux | 2 |
| Lascaux a commentary | 1 |
| Lascaux and Carnac | 1 |
| Lascaux, Paintings and Engravings | 1 |
| Lathkill Dale Nature Trail | 2 |
| Le Gouffre Jean-Bernard -1602M | 1 |
| Le Gouffre de Padirac | 1 |
| Le Gouffre de la Pierre Saint Martin | 1 |
| Le Grotte D'Italia | 1 |
| Le Grotte del Piemonte | 1 |
| Le Holloch et Son Karst | 1 |
| Le Karst de Saint Barnabe | 1 |
| Le Moyen Atlas Central Etude Geomorphologique | 1 |
| Le Pharefouilleur | 1 |
| Le Relief Calcaire | 1 |
| Le Secret des Bois de Lascaux | 1 |
| Le Systeme Chawresse-Veronika [loose survey] | 1 |
| Le Tour de la Coume Ouarnede en 24 Cavites | 1 |
| Le Trou qui Souffle | 1 |
| Le Verneau Souterrain | 1 |
| Lead Mining in Derbyshire in The Mid Nineteenth Century | 1 |
| Lead Mining in The Mid Pennines | 1 |
| Lead Mining in The Yorkshire Dales | 1 |
| Lead Mining in Wales | 2 |
| Lead Ores | 1 |
| Lead Smelting and Refining | 1 |
| Lead mining in the Peak district | 1 |
| Lechuguilla | 1 |
| Lechuguilla Cave | 2 |
| Legends of the Comstock Lode | 1 |
| Leitrim,Eire | 1 |
| Lemurs of the Lost World | 1 |
| Les Alpes Maritimes Souterraines | 1 |
| Les Belles du Doubs, Topoguide Tome 1, 50 Cavities | 1 |
| Les Cahiers de l'E.F.S | 1 |
| Les Causses du Quercy | 1 |
| Les Causses majeurs | 1 |
| Les Cavernes d'Albion | 1 |
| Les Cevennes | 1 |
| Les Chauves Souris de France | 1 |
| Les Cristallisations Excentriques de la Grotte de Moulis | 1 |
| Les Eaux Souterraines | 1 |
| Les Eyzies & the Vezere valley | 1 |
| Les Eyzies et Les Environs | 1 |
| Les Formations Pedologiques de la Grotte des Perles | 1 |
| Les Fossiles Vivants des Cavernes | 2 |
| Les Foyers Magdalenians de la Grotte du Portel | 1 |
| Les Grandes Cavites Heraultaises 2004 | 1 |
| Les Grottes des Cevennes et du Languedoc | 1 |
| Les Grottes des Echelles | 1 |
| Les Merveilles Souterraines de la France | 1 |
| Les Merveilles Souterraines de la France | 1 |
| Les Phenomenes Karstiques dans la Region de Cork | 1 |
| Les Plaines de Craie | 1 |
| Les Reliefs Karstiques du Perigord | 1 |
| Les abimes | 1 |
| Les grottes des Pyrenees | 1 |
| Les karsts du nord ouest de l'Europe | 1 |
| Les scaphandriers du desert | 1 |
| Levant | 1 |
| Levant, A Champion Cornish Mine | 1 |
| Lewis Morris and The Cardiganshire Miners | 1 |
| Life and Work of the Northern Lead Miner | 1 |
| Life and death underground | 1 |
| Life in A Cave | 1 |
| Light Rock and a little Magic | 1 |
| Light on Lascaux | 1 |
| Limestone Landforms. Pt.1 | 1 |
| Limestone Landforms. Pt.2 | 1 |
| Limestone PavementS with Special Reference to Western Ireland | 1 |
| Limestone in British Borneo | 1 |
| Limestones | 1 |
| Limestones & Caves of North West England | 2 |
| Limestones and Caves of Wales | 1 |
| Limestones and Caves of the Mendip Hills | 2 |
| Limestones and Caves of the Peak District | 2 |
| Limestones and caves of Wales | 1 |
| Limestones of Ireland | 1 |
| Listening in The Dark | 1 |
| Living Underground | 1 |
| Living in Caves | 1 |
| Lo Bramavenc | 1 |
| Logbook SWCC | 1 |
| London Underground | 1 |
| Lor des Gouffres | 1 |
| Lower Carboniferous Rocks of the Forest of Dean | 1 |
| Lower Div. Carb. Rocks of Forest of Dean | 1 |
| Lumea Liliecilor The world of Bats | 1 |
| Lumieres des Tenebres | 1 |
| Luola | 1 |
| MEKSYK'79 | 1 |
| MNRC Caving Bulletin | 1 |
| Macocha | 1 |
| Macocha A Moravsky Kras | 2 |
| Magarabilimi ve Magaracilik | 1 |
| Magazine | 2 |
| Magie des Gouffres | 1 |
| Mallorca Caves | 1 |
| Man Before History | 1 |
| Man and the Mendips | 1 |
| Manual of Caving Techniques | 1 |
| Manual of U.S.Cave Rescue Techniques | 1 |
| Manuale Tecnico di Soccorso Alpino | 1 |
| Manualetto d'Istruzioni Scientifiche per Alpinisti | 1 |
| Manuel Technique de L Ecole Francaise de Speleologie | 1 |
| Map of Southern Britain in The Ice Age | 1 |
| Mas-d'Azil | 1 |
| Matienzo 1975 | 1 |
| Matienzo 50 years of Speleology [DVD & Map] | 1 |
| Matienzo North Spain | 1 |
| Medica | 1 |
| Medicine for Mountaineering | 2 |
| Memoires | 1 |
| Memoires et Documents | 1 |
| Memoires of a Speleologist | 1 |
| Memoirs | 1 |
| Memoirs of the Geological Survey Vol XX | 1 |
| Memoria | 1 |
| Memorie | 1 |
| Men & Mining on The Quantocks | 1 |
| Men of Pierre St Martin | 1 |
| Mendip Cave Bibliography & Survey Catalogue | 1 |
| Mendip Karst Hydrology Research Project | 1 |
| Mendip Nature Research Committee MNRC | 1 |
| Mendip The Complete Cave and A View of the Hills | 1 |
| Mendip Underground | 5 |
| Mendip cheddar its gorge and caves | 1 |
| Mendip its Swallet Caves & Rockshelters | 1 |
| Meramec Caverns | 1 |
| Mes cavernes | 1 |
| Mesetas de Jaua, Guanacoco y Sarisarinama | 1 |
| Metal Mines of North Wales | 1 |
| Metal Mines of Southern Wales | 4 |
| Mexico The Black Holes Expedition | 1 |
| Mexico'79 | 1 |
| Michell - A Family of Cornish Engineers | 1 |
| Microbe.Colon.& Attack on Some Carb.MIOSP | 1 |
| Millclose: The Mine that Drowned | 1 |
| Mine Caves | 1 |
| Mine Lighting | 1 |
| Mine Pumping Engines in 18th Century Cornwall | 1 |
| Minera | 1 |
| Minera Lead Mines And Quarries | 1 |
| Mineral Survey of Coal Mines in South West Durham | 1 |
| Mineralogia Cornubiensis | 1 |
| Minerals | 1 |
| Minerals in Industry | 1 |
| Miners Day | 1 |
| Mines & Miners of Cornwall No 1 Around St.Ives | 1 |
| Mines & Miners of Cornwall No 10 Camborne-Illogan | 1 |
| Mines & Miners of Cornwall No 11 Marazion, St.Hilary & Breage | 1 |
| Mines & Miners of Cornwall No 12 Around Liskeard | 1 |
| Mines & Miners of Cornwall No 13 The Lizard-Falmouth-Mevagissey | 1 |
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| Mines & Miners of Cornwall No 2 St.Agnes-Perranporth | 1 |
| Mines & Miners of Cornwall No 3 Around Redruth | 1 |
| Mines & Miners of Cornwall No 4 Penzance-Mounts Bay | 1 |
| Mines & Miners of Cornwall No 5 Hayle, Gwinear & Gwithian | 1 |
| Mines & Miners of Cornwall No 6 Around Gwennap | 1 |
| Mines & Miners of Cornwall No 7 Perranporth-Newquay | 1 |
| Mines & Miners of Cornwall No 8 Truro to the Clay District | 1 |
| Mines & Miners of Cornwall No 9 Padstow, St.Columb & Bodmin | 1 |
| Mines & Miners of Cornwall,No XV,Calstock,Callington,Launceston | 1 |
| Mines and Minerals of the Mendip Hills Vol 1 | 1 |
| Mines and Minerals of the Mendip Hills Vol 2 | 1 |
| Mines and T'Miners | 1 |
| Mines in Scotland | 1 |
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| Mines of the Gwydyr Forest | 7 |
| Mines, Mills and Furnaces | 1 |
| Mines,Mills and Furnaces | 1 |
| Mining Fields of the West | 1 |
| Mining History | 1 |
| Mining Legislation for Mining Engineers | 1 |
| Mining Sites in Cornwall Vol 2 | 1 |
| Mining Without Miners | 1 |
| Mining and Regional Development | 1 |
| Mining for Metals in Wales | 2 |
| Mining in Cornwall Today | 5 |
| Mining in Cornwall Vol 1 | 1 |
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| Mining in Cornwall. Vol2 | 1 |
| Mining in Shropshire | 1 |
| Mining in The Lake Counties | 1 |
| Mining in the Medieval Landscape | 1 |
| Minutes of the Proceedings of the Institute of Civil Engineers | 1 |
| Mirabal | 1 |
| Mirabal No.3 1983 - 1987 | 1 |
| Mitteilungen | 4 |
| Mitteilungen Uber Hohlen und Karstforschung | 1 |
| Modern Exploration | 1 |
| Modern Practice in Mining Vol 1 Coal | 1 |
| Modern Practice in Mining Vol 2 The Sinking of Shafts | 1 |
| Moderne Methoden der Kohlwertung | 1 |
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| Monog.of Stalact/mites of the Cleaves Cave, Near Dalry Ayrshire | 1 |
| Monografia Geografica No 6 | 1 |
| Monts et Grottes de Saint Guilhem | 1 |
| Moors crags and caves of the high Peak | 1 |
| Moravsky Kras | 1 |
| More years under the earth | 1 |
| Morphogenetics of Karst Regions | 1 |
| Moses Kellow Autobiography | 1 |
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| Mountain Rescue First Aid | 1 |
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| Nature Conservancy Council Report No,1 | 1 |
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| Norbert Casteret Explorateur D'Abimes | 1 |
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| North West Speleology | 1 |
| Northern Caves 2 | 1 |
| Northern Caves Vol 1,Wharfedale & Nidderdale | 1 |
| Northern Caves Vol 1,Wharfedale and Nidderdale | 3 |
| Northern Caves Vol 2,Penyghent & Malham | 2 |
| Northern Caves Vol 3 | 1 |
| Northern Caves Vol 3,Ingleborough | 1 |
| Northern Caves Vol 4,Whernside and Gragareth | 2 |
| Northern Caves Vol 4A Scales Moor & Kingsdale | 1 |
| Northern Caves Vol 4B Leck & Casterton Fells | 1 |
| Northern Caves Vol 5,Northern Dales | 2 |
| Northern Caves the Three Counties System and the North West | 2 |
| Northern Caving | 3 |
| Northern Caving, CNCC Handbook | 1 |
| Northern Sump Index | 1 |
| Northern Sump Index 2015 | 1 |
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| Now and Then Vol 2 | 1 |
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| Now and Then, Upper Dulais and Swansea valleys. Vol 1 | 1 |
| Now and then Vol 4 | 1 |
| Now and then vol 5 | 1 |
| Numbered Publication | 1 |
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| O Carste | 1 |
| OFD Ogof Ffynnon Ddu - Provisional Waterways Survey - S1006 | 1 |
| OFD Ogof Ffynnon Ddu - S1001 | 1 |
| OFD Ogof Ffynnon Ddu - S1002 | 1 |
| OFD Ogof Ffynnon Ddu - S1003 - Longitudinal Section of Most of the Principal Passages | 1 |
| OFD Ogof Ffynnon Ddu - S1004 | 1 |
| OFD Ogof Ffynnon Ddu - S1005 | 1 |
| OFD Ogof Ffynnon Ddu - S1007 | 1 |
| OFD Ogof Ffynnon Ddu - S1008 | 1 |
| OFD Ogof Ffynnon Ddu - S1009 | 1 |
| OFD Ogof Ffynnon Ddu - S1010 | 1 |
| OFD Ogof Ffynnon Ddu - S1011 - A Topographical Survey | 1 |
| OFD Ogof Ffynnon Ddu - S1012 | 1 |
| OFD Ogof Ffynnon Ddu - S1013 | 1 |
| OFD Ogof Ffynnon Ddu - S1014 | 1 |
| OFD Ogof Ffynnon Ddu - S1015 | 1 |
| OFD Ogof Ffynnon Ddu - S1016 | 1 |
| OFD Ogof Ffynnon Ddu - S1017 | 1 |
| OFD Ogof Ffynnon Ddu - S1018 | 1 |
| OFD Ogof Ffynnon Ddu - S1019 | 1 |
| OFD Ogof Ffynnon Ddu - S1020 | 1 |
| OFD Ogof Ffynnon Ddu - S1021 | 1 |
| OFD Ogof Ffynnon Ddu - S1022 | 1 |
| OFD Ogof Ffynnon Ddu - S1023 | 1 |
| OFD Ogof Ffynnon Ddu - S1024 | 1 |
| OFD Ogof Ffynnon Ddu - S1025 | 1 |
| OFD Ogof Ffynnon Ddu - S1026 | 1 |
| OFD Ogof Ffynnon Ddu - S1027 | 1 |
| OFD Ogof Ffynnon Ddu - S1028 | 1 |
| OFD Ogof Ffynnon Ddu - S1029 | 1 |
| OFD Ogof Ffynnon Ddu - S1030 | 1 |
| OFD Ogof Ffynnon Ddu - S1031 | 2 |
| OFD Ogof Ffynnon Ddu - S1032 | 1 |
| OFD Ogof Ffynnon Ddu - S1033 | 1 |
| OFD Ogof Ffynnon Ddu - S1034 | 1 |
| OFD Ogof Ffynnon Ddu - S1035 | 1 |
| OFD Ogof Ffynnon Ddu - S1036 | 1 |
| OFD Ogof Ffynnon Ddu - S1037 | 1 |
| OFD Ogof Ffynnon Ddu - S1038 | 1 |
| OFD Ogof Ffynnon Ddu - S1039 | 1 |
| OFD Ogof Ffynnon Ddu - S1040 | 1 |
| OFD Ogof Ffynnon Ddu - S1041 | 1 |
| OFD Ogof Ffynnon Ddu - S1042 | 1 |
| OFD Ogof Ffynnon Ddu - S1043 | 1 |
| OFD Ogof Ffynnon Ddu - S1044 | 1 |
| OFD Ogof Ffynnon Ddu - S1045 | 1 |
| OFD Ogof Ffynnon Ddu - S1046 | 1 |
| OFD Ogof Ffynnon Ddu - S1047 | 1 |
| OFD Ogof Ffynnon Ddu - S1048 | 1 |
| OFD Ogof Ffynnon Ddu - S1049 | 1 |
| OFD Ogof Ffynnon Ddu - S1050 | 1 |
| OFD Ogof Ffynnon Ddu - S1051 | 1 |
| OFD Ogof Ffynnon Ddu - S1052 | 1 |
| OFD Ogof Ffynnon Ddu - S1053 | 1 |
| OFD Ogof Ffynnon Ddu - S1054 | 1 |
| OFD Ogof Ffynnon Ddu - S1055 | 1 |
| OFD Ogof Ffynnon Ddu - S1056 | 1 |
| OFD Ogof Ffynnon Ddu - S1057 | 1 |
| OFD Ogof Ffynnon Ddu - S1058 - Waterways, OFD | 1 |
| OFD Ogof Ffynnon Ddu - S1059 - Waterways | 1 |
| OFD Ogof Ffynnon Ddu - S1060 entrance | 1 |
| OFD Ogof Ffynnon Ddu - S1061 - Cwm Dwr 2 | 1 |
| OFD Ogof Ffynnon Ddu - S1062 entrance | 1 |
| OFD Ogof Ffynnon Ddu - S1063 - Cwm Dwr | 1 |
| OFD Ogof Ffynnon Ddu - S1064- Cwm Dwr | 1 |
| OFD Ogof Ffynnon Ddu - S1065- Cwm Dwr | 1 |
| OFD Ogof Ffynnon Ddu - S1066 - Stream - Cwm Dwr | 1 |
| OFD Ogof Ffynnon Ddu - S1067 - Cwm Dwr | 1 |
| OFD Ogof Ffynnon Ddu - S1068 | 1 |
| OFD Ogof Ffynnon Ddu - S1069 | 1 |
| OFD Ogof Ffynnon Ddu - S1070 | 1 |
| OFD Ogof Ffynnon Ddu - S1071 | 1 |
| OFD Ogof Ffynnon Ddu - S1072 - Plan | 1 |
| OFD Ogof Ffynnon Ddu - S1073 - Plan | 1 |
| OFD Ogof Ffynnon Ddu - S1074 Cwm Dwr Quarry Cave | 1 |
| OFD Ogof Ffynnon Ddu - S1075 Cwm Dwr Quarry Cave | 1 |
| OFD Ogof Ffynnon Ddu - S1076 Cwm Dwr Quarry Cave | 1 |
| OFD Ogof Ffynnon Ddu - S1077 Cwm Dwr Quarry Cave | 1 |
| OFD Ogof Ffynnon Ddu - S1078 Northern Lights | 1 |
| OFD Ogof Ffynnon Ddu - S1079 Northern Lights | 1 |
| OFD Ogof Ffynnon Ddu - S1080 - Craig-Y-Nos | 1 |
| OFD Ogof Ffynnon Ddu - S1081 - Plan | 1 |
| OFD Ogof Ffynnon Ddu - S1082 | 1 |
| OFD Ogof Ffynnon Ddu - S1084 - Entrance to Column Chamber | 1 |
| OFD Ogof Ffynnon Ddu - S1085 - Craig-Y-Nos | 1 |
| OFD Ogof Ffynnon Ddu - S1086 - Craig-Y-Nos | 1 |
| Observations sur les Circulations Soutr.Karst.du Languedoc Orient | 1 |
| Occasional Papers | 3 |
| Occasional Papers Shepton Mallett Caving Club SMCC | 1 |
| Occasional Publication | 20 |
| Occasional Publication CSS | 1 |
| Occasional Publication SWCC | 1 |
| Occasional Publications | 1 |
| Of Caves and Caving | 1 |
| Ogof Pant Canol - S2022 | 1 |
| Ogof yr Esgyrn | 1 |
| Ogof yr esgyrn excavations | 1 |
| Ogofa | 1 |
| Old Cornwall | 1 |
| Omar's Cave Adventure | 1 |
| Omnibuss | 1 |
| On Call a complete reference for cave Rescue | 1 |
| On Caves and Cameras | 1 |
| On Rope | 1 |
| On Station | 1 |
| On The Faunal Zones of the Rush Skerries Carb.Section,Co.Dublin | 1 |
| On The Karst Phenomena in North Vietnam | 1 |
| On the Track of Prehistoric Man | 1 |
| On the contents of a rock retreat in south eastern Pennsylvania | 1 |
| Onan | 1 |
| One Thousand Metres Down | 1 |
| Opencast Mining/Quarrying & Alluvial Mining | 1 |
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| Opera Ipogea | 1 |
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| Orpheus Caving Club Newsletter OCC | 1 |
| Orso Speleo Biellese | 1 |
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| Padirac | 3 |
| Padirac ou L'Adventure Souterraine | 1 |
| Pal volgyi barlang | 1 |
| Palaces Under The Earth | 1 |
| Palaeolithic Cave Art | 1 |
| Palaeolithic art | 1 |
| Palaeontological & Lith.Divs.of The Lower Tert.LS. of Jamaica | 1 |
| Paleohydrography of Caves Moravsky Karst | 1 |
| Pant Mawr Pot - S2001 | 1 |
| Pant Mawr Pot - S2003 | 1 |
| Pant Mawr Pot - S2004 | 1 |
| Papers 3rd International Symposium on Underground Water Tracing | 1 |
| Parcul National Retezat | 1 |
| Passages | 1 |
| Paviland Cave and the Red Lady | 1 |
| Pays et Paysages du Calcaire | 1 |
| Peak District Rigging Guide 11th Edition | 1 |
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| Peak Rigging Guide | 1 |
| Peak rigging Guide | 1 |
| Pech-Merle | 1 |
| Pech-Merle de Cabrerets | 1 |
| Peintures des Grottes d'Ajanta | 1 |
| Pelobates | 1 |
| Pennine Underground | 2 |
| Penwyllt | 1 |
| Penwyllt Village, Growth, Development and Decline [Dissertation] | 1 |
| Peschery | 1 |
| Pestera Ciclovina Uscata Ciclovina Dry cave | 1 |
| Pestera Meziadului | 1 |
| Pestera Muierilor | 1 |
| Pestera Ponoraci Ciclovina cu Api | 1 |
| Pestera Sura Mare - Sura Mare cave | 1 |
| Pestera Topolnita | 1 |
| Pesteri Vintului | 1 |
| Pesteri din Romania | 3 |
| Petrology of Igneous Rocks | 1 |
| Petrology of Sedimentary Rocks | 1 |
| Photographs of Folk Life | 1 |
| Phys.Geog.Der Sudchinesischen Karstgegnd | 1 |
| Pierk | 1 |
| Pigs and Ingots | 1 |
| Pioneer Under the Mendips | 1 |
| Piroda | 1 |
| Plan der Dachstein-Mammuthohle | 1 |
| Plan of Tunnel Cave - S2026 | 1 |
| Planning a Small Expedition | 1 |
| Plongees sous la Terre | 1 |
| Podzemne Everesty | 1 |
| Poggle | 1 |
| Polish Caving | 1 |
| Poll Cragreagh, Co.Clare,Eire | 1 |
| Polycyclic Swallow Holes in The Manifold Valley, Staffordshire | 2 |
| Popular Archaeology | 1 |
| Porth yr Ogof,Breconshire | 1 |
| Portrait of the Brecon Beacons | 1 |
| Postojna | 1 |
| Postojna Caves | 1 |
| Postojnska jama | 1 |
| Potholing Beneath The Northern Pennines | 1 |
| Poulnagollum-Poulelva Caves | 1 |
| Povijest prosirivanja uskih prolaza u spiljama i jamama | 1 |
| Powys Metal Mines Survey 1993 | 1 |
| Powys Structure Plan | 1 |
| Practical Geology for Schools | 1 |
| Prehistoire Speleologie Ariegeoise,1946 | 1 |
| Prehistoire Speleologie Ariegeoise,1947 | 1 |
| Prehistoric Art | 1 |
| Prehistoric Art of the Western Mediterranean and the Sahara | 1 |
| Prehistoric Cave Painting | 1 |
| Prehistoric Gower | 1 |
| Prehistoric art | 1 |
| Prehistoric man | 1 |
| Prehistory | 1 |
| Premiere Reunion Internationale sur le Sauvetage en Grottes | 1 |
| Premiers pas sous terre en Vercors et Chartreuse | 1 |
| Principal Mines in Cornwall | 2 |
| Principles of Hydrology | 1 |
| Prize Essays | 1 |
| Problems of Environmental Protection of Karst Area | 1 |
| Proc. of the 14th International Congress of Speleology, Athens | 2 |
| Proc. of the 2011 NAMHO Conf. 50 years of Mine Exploration | 1 |
| Proceedings | 4 |
| Proceedings UBSS | 1 |
| Proceedings Vol LXXII | 1 |
| Proceedings of the 12th Eurospeleo Forum, Ebensee, Austria | 1 |
| Proceedings of the 7th International Speleological Congress | 1 |
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| Publication | 5 |
| Publication ? | 2 |
| Publications | 1 |
| Pwllheli and North Wales | 1 |
| Pyrenees Occidentales Francaise et Region Cantabrique Espagnole | 1 |
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| Quarrying in Somerset | 1 |
| Quarrying in Somerset Supp.No 1 | 2 |
| Quarrying in Somerset, DRAFT POLICY | 1 |
| Quaternary of the Brecon Beacons field Guide | 1 |
| Quelques classiques Speleologiques en Chartreuse [Extracts from Chartreuse Souterraine pub 1985] | 1 |
| Quest for Caves in High Nepal | 1 |
| R.R.Grotte Demaniali di Postumia,Trieste | 1 |
| RRCPC Newsletter | 1 |
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| Radiant Darkness The Wonderful World of Caves | 2 |
| Radio aerial handbook | 1 |
| Rassegna Speleologica Italiana | 2 |
| Rates of Erosion and Weathering in The British Isles | 1 |
| Ratgoed, a study in slate | 1 |
| Razvoj rasvjete za Speleoloske Potrebe | 1 |
| Recherches Morphologiques en Basse-Provence Calcaire | 2 |
| Reconnaissance of Ground-Water Resources in the Mississippian Plateau Region Kentucky | 2 |
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| Recovering the Past | 1 |
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| Reference Book on Practical Coal Mining | 1 |
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| Reliquiae diluvianae | 1 |
| Report | 3 |
| Report of the Commission on Mining and The Environment | 1 |
| Report of the Commission on Mining and the Environment | 1 |
| Report of the Nature Conservancy 1959 | 1 |
| Report of the Nature Conservancy 1960 | 1 |
| Report of the Nature Conservancy 1961 | 1 |
| Report of the Royal Commission on The Coal Industry 1925 | 1 |
| Report of the Royal Commission on The Coal Industry Vol 1 | 1 |
| Report on a Human Skull found near Kents Cavern | 1 |
| Reports | 1 |
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| Reseau Dent de Crolles Folder 1 | 1 |
| Reseau Dent de Crolles Folder 2 | 1 |
| Reseau Felix Trombe - Henne Morte | 1 |
| Reservoir Hole, the story of a Cheddar Cave | 1 |
| Resins & Polymer Systems | 1 |
| Retezat National Park | 1 |
| Review | 2 |
| Revue Geographiqe de L'Est | 1 |
| Revue Roumaine de Geol.Geophys. et Geog. | 1 |
| Revue Roumaine de Geol.Geophys. et Geog. 25th Anniv.Edition | 1 |
| Revue d'Alpinisme | 1 |
| Rhodesian Archaeological Expedition,1929 | 1 |
| Rhondda Through Time | 1 |
| Rhoysdd Slate Quarry | 1 |
| Ricerche Sugli Aspetti, Lombardia | 1 |
| Ricerche di Meteorologia Ipogea nel Gruppo de.Grigne | 1 |
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| Rich Mountains of Lead | 1 |
| Richesses Souterraines | 1 |
| Riddle of the Welsh Caves | 1 |
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| River Scenery at the Head of the Vale of Neath | 1 |
| River of Tears | 1 |
| Rivieres de la Nuit | 1 |
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| Rock Climbing in Wales | 1 |
| Rock Pictures of Europe | 1 |
| Rock Trails of South Wales | 1 |
| Rock cut temples Around Bombay | 1 |
| Rocks and Minerals | 1 |
| Rope Rescue Manual | 1 |
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| Rutley's Mineralogy | 1 |
| SLB User's Manual | 1 |
| SMaps | 1 |
| SRT | 3 |
| SRT Rigging Guide | 1 |
| Salt Water Encroachment, Kephallina | 1 |
| Saltpetre Mining in Mammoth Cave, Kentucky | 1 |
| Salzburger Hohlenbuch | 2 |
| Salzburger Hohlenbuch Planbeilagen | 1 |
| Salzburger Hohlenbuch, Band 1 | 1 |
| Salzburger Hohlenbuch, Band 2 | 1 |
| Salzburger Hohlenbuch, Band 3 | 1 |
| Sandstone Caves of Nottingham | 1 |
| Sardegna Il mondo sotteraneo | 1 |
| Sardegna non Solo Mare | 1 |
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| Sections of Strata of the Yorkshire Coalfield | 1 |
| Sedeck No 10 Sept 2014 | 1 |
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| Show caves in Austria | 2 |
| Show caves of the czech republic | 1 |
| Sinc Y Giedd - S2012 | 1 |
| Single Rope Techniques | 1 |
| Sink Holes on The Lincolnshire LS between Grantham & Stamford | 1 |
| Sixty Years of Caves and Caving | 1 |
| Slate Quarrying at Corris | 1 |
| Slate Quarrying in Wales | 1 |
| Slate mining in Wales | 1 |
| Slojame | 1 |
| Slovakia show caves | 1 |
| Slovene Karst and Caves in the Past | 1 |
| Slovenia Cave Guide, caves of the classical Karst | 1 |
| Slovensky Kras | 2 |
| Smithsonian Contributions to Knowledge | 2 |
| Soilsurvey of Tauorga, Tripolitania, Libya | 1 |
| Solution Subsidence Outliers of Millstone Grit on the Carboniferous Limestone of the North Crop of the South Wales Coalfield | 1 |
| Solution Subsidence in S.E.Carmarthenshire & S.W.Breconshire | 1 |
| Some Caves & Crags of Peakland | 1 |
| Some Caves and Crags of Peakland | 1 |
| Some Geomorphological Problems of the Nullarbor Plain | 1 |
| Some Notes on A Cave Near Radford | 1 |
| Some Observations on Bypassed Swallow Holes | 1 |
| Some Problems of a Karst Area in The Eastern Transvaal, South Africa | 1 |
| Some Remarks on Swedish Speleology | 1 |
| Some Technical Aids for Cave Exploration | 1 |
| Some aspects of the drainage evolution of the Moss Valley - north-east Derbyshire | 1 |
| Somerset | 1 |
| Somerset Sump Index 4th edition | 1 |
| Sotanos de Mexico | 1 |
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| South Crofty Underground | 1 |
| Special Publication | 1 |
| Special Reports on the Mineral Resources of Great Britain Vol | 2 |
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| Speleo Causse Mejean | 1 |
| Speleo Digest | 1 |
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| Speleo Sportive en Ardeche | 1 |
| Speleo dans le Vercors | 4 |
| SpeleoGuide Ariege Pyrenees | 1 |
| SpeleoScene | 1 |
| Speleogen | 1 |
| Speleogenesis, Evolution of Karst Aquifers | 1 |
| Speleolog | 2 |
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| Speleologica Belgica | 1 |
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| Speleological Guide to Krka National Park | 1 |
| Speleological Survey in South Korea 1966 | 1 |
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| Speleologie du Canton de Vaud | 1 |
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| Speleologie et Hydrogeologie des Massifs Calcaires des Pyrenees-Orientales | 1 |
| Speleologiska Studier | 1 |
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| Speleology The Study of Caves | 3 |
| Speleology, Caves and the Cave Environment | 1 |
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| Speleorient | 1 |
| Speleos Sciences | 1 |
| Speleosportive 2 dans le Jura franc comtois | 1 |
| Speleotawe | 1 |
| Spelunca | 2 |
| Spelunking to Adventure | 1 |
| Speologie | 1 |
| Sporting Caves Potholes and Mines of Derbyshire | 1 |
| St Cuthberts Swallet | 1 |
| Stalactite | 1 |
| Standards of Accuracy & Limits of Error for Plans/Surv. in Mines | 1 |
| Stannary Tales | 2 |
| Stockage de Calcium, Crustaces Amphipodes | 1 |
| Stora Kopparbergs, An Historical Survey | 1 |
| Stora Kopparbergs, Facts & Figures | 1 |
| Store Norske Spitsbergen Kulkompani | 1 |
| Strangest underground places in Britain and the best Worldwide | 1 |
| Studia Geographica 5 | 1 |
| Studia Geographica No 5, Karst Denudation | 1 |
| Studia Geographica No.62, Karst & Environment | 1 |
| Studia Spelaeologica | 1 |
| Studies in Speleology | 1 |
| Subterranea | 1 |
| Subterranea Croatica Croatia | 1 |
| Subterranean Climbers | 2 |
| Subterranean Ecosystems | 1 |
| Successful Hydraulics No 6 | 2 |
| Sudwala | 1 |
| Sum.of Res.& Descrip.of Caves & Karst of Greenbrier Vall., W.Virg. | 1 |
| Sumatra 87 | 1 |
| Sump Index | 1 |
| Sur les Palmes d'Henri Lombard | 1 |
| Surveying Caves | 1 |
| Sutherland Caves | 2 |
| Swallow Holes on the Millstone Grit and Carboniferous Limestone of the South Wales Coalfield | 1 |
| Sweden Illustrated | 1 |
| Swildon's Two and Three | 1 |
| Swildons Hole | 1 |
| T'ill an t'oade uns upun Greenho | 1 |
| Tareni Colliery | 1 |
| Tasmania | 1 |
| Technical Aids in Caving Symposium | 1 |
| Ten Years Under The Earth | 2 |
| Ten Years Under the Earth | 1 |
| Ten years under the earth | 2 |
| Terra Mystica | 1 |
| Terre Sauvage | 1 |
| Texas Cave Survey | 1 |
| Texas Caves | 1 |
| The Brecon Forest Tramroads | 1 |
| The 1965/66 Karst Hydrology Expedition to Jamaica | 1 |
| The 2nd International Cave Diving Rescue Conference | 1 |
| The Abandoned Mines of West Carbery | 1 |
| The Abbe Breuil: Prehistorian | 1 |
| The Ajanta Caves | 1 |
| The Alderley Edge Mines | 1 |
| The Ancient Cavemen of Devonshire | 1 |
| The Ancient Caves of Szechwan Province, China | 1 |
| The Andros Project | 1 |
| The Antiquity of Man | 1 |
| The Archaeology of Underground Mines & Quarries in England | 1 |
| The Avonian Succession in The Southern Part of the Isle of Man | 1 |
| The Bat Workers Manual | 2 |
| The Beds above the Carboniferous Limestone in NW Co.Clare, Eire | 1 |
| The Bexar Facts | 1 |
| The Black Mountain Lime Industry | 1 |
| The Brecon Forest Tramroads | 2 |
| The Brecon Spinal Immobilisation Splint | 1 |
| The Breconshire Naturalist No 27 | 1 |
| The Breconshire Naturalist No 28 | 1 |
| The Breconshire Naturalist No 29 | 1 |
| The British Caver | 1 |
| The British Coal Trade | 1 |
| The Broken Hill Mine Zambia | 2 |
| The Cambro-Ordovician LS & Dolomites of Skye and Kishorn Area | 1 |
| The Carboniferous LS in Co.Dublin South of the River Liffey | 1 |
| The Carboniferous Limestone Series of the Avon Gorge | 1 |
| The Carboniferous Rocks at Rush | 1 |
| The Castleton Mines | 1 |
| The Cave Divers | 1 |
| The Cave Home of Peking Man | 1 |
| The Cave of Lascaux | 1 |
| The Cave of Postojna and Other Marvels | 1 |
| The Cave of Rouffignac | 1 |
| The Caver | 1 |
| The Caverns of Derbyshire | 1 |
| The Caverns of Upper Ease Gill | 1 |
| The Caves Beyond | 2 |
| The Caves and Mines of Anglesey | 3 |
| The Caves of Carmarthen | 2 |
| The Caves of Clydach | 1 |
| The Caves of County Cork | 1 |
| The Caves of Fermanagh and Cavan | 2 |
| The Caves of Gower | 3 |
| The Caves of Ireland | 1 |
| The Caves of Jenolan 2: The Northern Limestone | 1 |
| The Caves of Maryland | 1 |
| The Caves of Meghalaya | 1 |
| The Caves of Mendip | 1 |
| The Caves of Night | 1 |
| The Caves of North Wales | 1 |
| The Caves of North West Clare,Ireland | 1 |
| The Caves of Northumberland | 1 |
| The Caves of Scotland, Except Assynt | 2 |
| The Caves of West Wales | 1 |
| The Caves of a Thousand Buddhas | 1 |
| The Caves of the Central Northern Outcrop | 1 |
| The Caves of the Forest of Dean | 1 |
| The Caves of the Little Neath Valley | 1 |
| The Caves of the South Eastern Outcrop | 1 |
| The Caves of the South Gower Coast | 2 |
| The Caves of the South Gower Coast an Archaeological assessment | 1 |
| The Caves on the West bank of the Afon Tawe | 1 |
| The Central Highlands | 1 |
| The Central Lakes of Westralia and Westralian Peneplain | 1 |
| The Characteristics & Development of Limestone Regions in The British Isles | 1 |
| The Characteristics & Development of the LS Regions in British Isles | 1 |
| The Clastic Sediments of Wellington Cave | 1 |
| The Cliffs and Caves of Cheddar | 1 |
| The Clydach Gorge | 1 |
| The Coal Measures Sequence in The Taff Valley, Glamorgan | 1 |
| The Coalbrookdale Coalfield, Catalogue of Mines | 1 |
| The Colliery Managers Handbook | 1 |
| The Complete Book of Cave Exploration | 1 |
| The Complete Book of Dowsing and Divining | 1 |
| The Complete Caves of Mendip | 2 |
| The Conservation of Caves in Britain | 1 |
| The Conservation of Limestone Pavement | 1 |
| The Copper & Lead Mines of Ecton Hill | 1 |
| The Copper and Lead mines of Ecton Hill | 1 |
| The Cornish Beam Engine | 1 |
| The Cornish Miner | 1 |
| The Cornish Miner in America | 1 |
| The Cruel Inheritance | 1 |
| The Darkness Beckons | 3 |
| The Darkness Beckons Supplement | 1 |
| The Deepest Hole in The World | 1 |
| The Derbyshire Miners | 1 |
| The Descent of Pierre St Martin | 1 |
| The Dig | 1 |
| The Double Decker Himalayan Caving Adventure | 1 |
| The Drainage Systems of Wales and the Adjacent Regions | 1 |
| The Draining of the Alport Lead Mines | 1 |
| The Drumlin Topography of South Donegal | 1 |
| The Dudley Limestone mines | 1 |
| The Ease Gill System | 1 |
| The Ecology of Malaysian Caves | 1 |
| The English Dictionary | 1 |
| The Evolution of the Bristol Channel | 1 |
| The Excavation of Tell Abu Hureyra, Syria | 1 |
| The Falls and Caves of Ingleton | 1 |
| The Faunal Succession in The Carboniferous LS Near Cork | 1 |
| The Fergus river cave, Co. Clare | 1 |
| The Geological History of Brecknock | 1 |
| The Geological Map, an anatomy of the Landscape | 1 |
| The Geology of Carlsbad Caverns | 1 |
| The Geology of the South Wales Coalfield, Part 2 | 1 |
| The Geology of the South Wales Coalfield, Part 6 | 1 |
| The Geomorphological Development of Ogof Ffynnon du | 1 |
| The Geomorphology of Brecknock | 1 |
| The Geomorphology of the Dan yr Ogof Caves | 1 |
| The Georgia Spelunker | 1 |
| The Glacial Retreat from Central and Southern Ireland | 1 |
| The Glamorgan Heritage Coast, a Guide to its Geology | 1 |
| The Gold Mines of Merioneth | 1 |
| The Grampian Speleological Group GSG | 1 |
| The Great Caving Adventure | 2 |
| The Great County Adit | 1 |
| The Great Forest of Brecknock | 1 |
| The Great Laxey Mine | 1 |
| The Grotto of Lascaux | 1 |
| The Growth of Fungi in Caves in Great Britain | 1 |
| The Hal-Saflieni Hypogeum | 1 |
| The Hardrock Men | 1 |
| The Harveys of Hayle | 1 |
| The Hepste River Caves | 1 |
| The Hidden Side of Swaledale | 1 |
| The History of Kents Cavern | 1 |
| The History of Mendip Caving | 1 |
| The Holer | 1 |
| The Hollow Mountain 3. 2013 - 2017 | 1 |
| The Hollow Mountains | 1 |
| The Ice Age in Britain | 1 |
| The Ice Age in The Dublin District | 1 |
| The Industrial Archaeology of Wales | 1 |
| The Iron Cradle: Ystragynlais and the Upper Swansea Valley | 1 |
| The Iron Mines of Dannemora and Dannemora Iron | 1 |
| The Iron Mines of the Forest of Dean | 1 |
| The Iron Moor | 1 |
| The Island of Skye | 1 |
| The Journal of Glaciology Vol 1 No 4 | 1 |
| The Journal of the Institute of Metals No 1 | 1 |
| The Journal of the Institute of Metals No 2 | 1 |
| The Karst Caves of Georgia | 1 |
| The Karst Groundwaters of Syria | 1 |
| The Karst Hydrogeochemistry of the Carb.LS.of North Derbyshire | 1 |
| The Karst of Ireland, Limestone Landscapes & Gwater Drainage Sys | 1 |
| The Karstlands of Jamaica | 1 |
| The Krapina Hominids | 1 |
| The Lake District at Work | 1 |
| The Land of the Causses | 1 |
| The Landforms of North West Co.Clare, Ireland | 1 |
| The Last Adventure | 1 |
| The Last Deep Mine of Dean | 1 |
| The Law Relating to Safety & Health Vol2 | 1 |
| The Law Relating to Safety & Health Vol3 | 1 |
| The Lead Legacy | 1 |
| The Lead Mines of the Northern Pennines | 1 |
| The Lead Smelting Mills of the Yorkshire Dales & North.Pennines | 1 |
| The Life of the Cave | 1 |
| The Limestone Ranges of Fitzroy Basin | 1 |
| The Limestone Resources of the Union | 1 |
| The Limestone and Caves of Devon | 1 |
| The Limestones of Scotland | 1 |
| The Little Neath River Cave South Wales | 1 |
| The Little Neath River Cave, South Wales | 1 |
| The Lives of Bats | 1 |
| The Llangattwg System - Agen Allwedd - Daren Cilau - S2027 | 1 |
| The Llywernog Silver Lead Mine | 1 |
| The Llywernog Silver-Lead Mine | 1 |
| The London Caver | 1 |
| The Longest Cave | 1 |
| The Lost Pothole | 1 |
| The Lost River of Gaping Gill | 1 |
| The Lower Carboniferous Succession in the Settle District | 1 |
| The Lower South East of South Australia, A Karst Province | 1 |
| The Lyre | 1 |
| The Making of Cheddar Gorge | 1 |
| The Men of the Barma Grande | 1 |
| The Mendip Cave Registry | 1 |
| The Mendip Caver | 1 |
| The Mendip caves | 2 |
| The Mendips | 1 |
| The Metalliferous Mines of Wales | 3 |
| The Metalliferous Mining Region of South West England Vol 1 | 1 |
| The Metalliferous Mining Region of South West England Vol 2 | 1 |
| The Metalliferous Mining Region of South West England, Vol 1 | 1 |
| The Metalliferous Mining Region of South West England, Vol 2 | 1 |
| The Milwr Tunnel | 1 |
| The Mine Under The Sea | 2 |
| The Mineral Kingdom | 1 |
| The Mineral Wealth of Wales & its Exploitation | 1 |
| The Mineral Wealth of Wales and its Exploitation | 3 |
| The Mines & Mineral Railways of East Cornwall and West Devon | 1 |
| The Mines of Cornwall,No 1 The Lands End Peninsula | 1 |
| The Mines of Cornwall,No 2 The Camborne Area | 1 |
| The Mines of Cornwall,No 3 The Mounts Bay Area | 1 |
| The Mines of Cornwall,No 4 The Redruth Area | 1 |
| The Mines of Cornwall,No 5 Mid Cornwall | 1 |
| The Mines of Cornwall,No 6 East Cornwall | 1 |
| The Mines of Ireland | 1 |
| The Mines of Mendip | 2 |
| The Mines of Newent and Ross | 1 |
| The Mines of South Western Scotland | 1 |
| The Mines of Tharsis | 1 |
| The Mines of Wales | 2 |
| The Mines of the Forest of Dean | 1 |
| The Mines of the Forest of Dean and Surrounding Areas | 1 |
| The Mining Industry of Southern Rhodesia | 1 |
| The Mitchelstown Caves, Co.Tipperary | 1 |
| The Modern Dowser | 1 |
| The Morph.of Tropical Humid Karst Ref.to Caribbean & C.America | 1 |
| The Mountains at The Bottom of the World | 1 |
| The Mountains of Greece | 1 |
| The Mysterious World of Caves | 1 |
| The National Cave Rescue Commission | 1 |
| The Natural Bridge & its Historical Surroundings | 1 |
| The Natural History of the Burren | 1 |
| The Netherworld of Mendip | 1 |
| The New Welsh Dictionary | 1 |
| The New Zealand Cave Atlas | 1 |
| The New Zealand Cave Atlas North Island | 1 |
| The Next Horizon | 1 |
| The Nottinghamshire Coalfield 1881/1981 | 1 |
| The Old Copper Mines of Snowdonia | 1 |
| The Old Gunpowder factory at Glynneath | 1 |
| The Old Metal Mines of Mid Wales Part 1 | 2 |
| The Old Metal Mines of Mid Wales Part 2 | 2 |
| The Old Metal Mines of Mid Wales Part 3 | 2 |
| The Old Metal Mines of Mid Wales Part 4 | 2 |
| The Old Metal Mines of Mid Wales Part 5 | 2 |
| The Old Mineral Line | 1 |
| The Ordnance Survey Outdoor Handbook | 1 |
| The Ordovician Limestones of the Kingston Area. | 1 |
| The Origin of the Limestone Hills of Malaya | 1 |
| The Painted Caves | 1 |
| The Pattern of Past History, in The National Park | 1 |
| The Peak Cavern System | 1 |
| The Pentewan Railway | 1 |
| The People of the Cave | 1 |
| The Phantom of the Hastings Caves | 1 |
| The Pleistocene Vertebrate Fauna from Cumberland Cavern Maryland | 1 |
| The Plymouth Limestone; and the Devonian tetracorals | 1 |
| The Polje, The Problem of Definition | 1 |
| The Pollnagollum Cave, Co.Clare | 1 |
| The Postojna Grottoes | 1 |
| The Prehistoric Native American Art Of Mud Glyph Cave | 1 |
| The Project Archaeolim | 1 |
| The Prospector | 1 |
| The Quarries,IronStone,Limestone & Sand | 1 |
| The Record | 1 |
| The Red Hills | 1 |
| The Redruth and Chasewater Railway | 1 |
| The Remouchamps Caves | 1 |
| The River Styx-Salt Spring Cave System | 1 |
| The Robbers' Cave | 1 |
| The Rock Pictures of Europe | 1 |
| The Science of Speleology | 1 |
| The Scientific Revolution in Archaeology | 1 |
| The Search for Silver | 1 |
| The Secret of Rumbling Churn | 1 |
| The Severn Tunnel | 1 |
| The Skocjan Caves Regional Park | 1 |
| The Solution of Limestone in an Arctic Environment | 1 |
| The Solutional Erosion of Limestone in an Arctic Region | 1 |
| The Sorby Record | 1 |
| The Speleological Yearbook & Diary 1964 | 2 |
| The Speleological Yearbook & Diary 1965 | 1 |
| The Speleologist | 2 |
| The Spur Book of Knots | 1 |
| The St Just Mining District | 1 |
| The Stannaries | 1 |
| The Story of Cheddar | 1 |
| The Story of Kents Cavern | 2 |
| The Story of Wookey Hole | 2 |
| The Subterranean Kingdom | 1 |
| The Subterranean Wonders of Hawaii | 1 |
| The Subterranean Wonders of Sardinia | 1 |
| The Surprising Asians | 1 |
| The Testimony of the Spade | 1 |
| The Transvaal Ape-Man Bearing Cave Deposits | 1 |
| The Tunnels of Cu Chi | 1 |
| The Underground Atlas | 2 |
| The Underground River | 1 |
| The Underground Waters of North-West Yorkshire Part I The Sources of the Aire | 1 |
| The Underground Waters of North-West Yorkshire Part II Ingleborough | 1 |
| The Underground adventures of a rock chick | 1 |
| The Undersea Adventure | 1 |
| The Undersea Challenge | 1 |
| The Untamed River Expedition | 1 |
| The Use of Computers in Cave Surveying | 1 |
| The Use of Explosives for Demolitions | 1 |
| The Valley of Stracena and The Dobschau Ice Cavern | 1 |
| The Wainfelin and Tranch Iron Mine | 1 |
| The Wanlockhead Bolts | 1 |
| The Way Out | 1 |
| The West Somerset Mineral Railway & the Brendon Hills Iron Mines | 1 |
| The Western Brecon Beacons | 1 |
| The Wilderness Underground | 1 |
| The Wonders of Dan yr Ogof | 1 |
| The World of Bats | 1 |
| The World of Caves | 2 |
| The Year's Photography 1939-1940 | 1 |
| The Yorkshire Dales | 1 |
| The Yorkshire Wolds | 1 |
| The Younger Limestones of New Zealand | 1 |
| The Yunkang Caves | 1 |
| The art of the cave dweller | 1 |
| The ascent of Everest | 1 |
| The cave artists | 1 |
| The cave diving group manual | 1 |
| The cave explorers | 1 |
| The cave hunters | 1 |
| The cave of postojna and other curiosities of the Karst | 1 |
| The caves West of the Tawe Valley | 1 |
| The caves of Cornwall | 1 |
| The caves of Fermanagh and Cavan | 1 |
| The caves of Geevagh | 1 |
| The caves of Karst | 1 |
| The caves of Mendip | 1 |
| The caves of West Wales | 1 |
| The caves of the Southern Outcrop | 1 |
| The caves of the great hunters | 1 |
| The children of craig y nos | 1 |
| The complete Caving manual | 1 |
| The darkness under the earth | 1 |
| The desert caves of Saudi Arabia | 1 |
| The discovery of luray caverns Virginia | 1 |
| The district of Sennybridge, Trecastle and Defynnog Book 1 | 1 |
| The district of Sennybridge, Trecastle and Defynnog Book 2 | 1 |
| The earliest views of Glamorgan | 1 |
| The game goes on | 1 |
| The great cave of Wookey Hole | 2 |
| The great siege | 1 |
| The great storms and floods of July 1968 on Mendip | 1 |
| The heart of Mendip | 1 |
| The jewel cave adventure - 50 miles of discovery under S. Dakota | 1 |
| The nest gatherers of tiger cave | 1 |
| The new Caves of Scotland | 1 |
| The seaboard of Mendip | 1 |
| The secret and the sacred Beacons | 1 |
| The secret world of Porth yr Ogof | 1 |
| The show caves of Great Britain | 1 |
| The story of Priddy | 1 |
| The subterranean world | 1 |
| The suckers visit to the Mammoth Cave | 1 |
| The truth is a cave in the Black Mountains | 1 |
| Theoretischen Spelaologie | 1 |
| They Words, They Words They 'orrible Words | 1 |
| They found another world | 2 |
| Three Below Gower | 1 |
| Thrutch | 1 |
| Timeless Cheddar Caves | 1 |
| Tin Mines and Miners of Dartmoor | 1 |
| Tin Mining | 1 |
| Tin and Tin Mining | 1 |
| To Boyno | 3 |
| To Photograph Darkness | 1 |
| Tomo Times | 1 |
| Tooth Cave, Ilston, Gower: an early Bronze Age occupation. I.Archaeology | 1 |
| Tot Lord & the Bone Caves | 1 |
| Tourbieres et morphologie karstique dans la Region de Sligo | 1 |
| Touring Club of France | 1 |
| Toute la Speleologie | 1 |
| Tower of Strength | 1 |
| Traite de Speleologie | 1 |
| Trans.of the Nat.Hist.Soc.Northumberland & Durham Vol 6/1 | 1 |
| Trans.of the Nat.Hist.Soc.Northumberland & Durham Vol 6/2 | 1 |
| Transactions | 6 |
| Transactions Vol. XCII | 1 |
| Transactions Vol. XCV | 1 |
| Transactions Vol. LXXXIX | 1 |
| Transactions Vol. XC | 1 |
| Travaux | 1 |
| Travertines and cave deposits of the Kaap escarpment of South Africa, and the type locality of Australopithecus africanus Dart | 1 |
| Tresviso 2011 | 1 |
| Tresviso 2012 [Survey] SWCC | 1 |
| Tubes, Bull. C.D.S. Ardeche | 1 |
| Tunnel Cave, Paul and Barnabas Extension | 1 |
| Tunnelling with Explosives | 1 |
| Turkiye Magaralari | 2 |
| Turystyczne Jaskinie Tatr | 1 |
| Twelve Mines in The Broseley Area | 1 |
| Two Centuries of Industrial Welfare | 1 |
| Ty Gwyn Mine - S2028 | 1 |
| U Kamenu Svjetlo | 1 |
| Un Die Frage der Hohlenbildungszyklen | 1 |
| Undara volcano and its lava tubes | 1 |
| Under Cheddar Cliffs | 1 |
| Underground | 1 |
| Underground Adventure | 2 |
| Underground Britain | 1 |
| Underground Britain Legal & Insurance Issues | 1 |
| Underground Clwyd | 1 |
| Underground England | 1 |
| Underground Reigate | 1 |
| Underground Wales | 1 |
| Underground Water Tracing - Investigations in Slovenia | 1 |
| Underground Worlds-Guizhou China | 1 |
| Underground in Furness | 2 |
| Underground wonderworld of Ternopil Region | 1 |
| Underwater Guide to the Lot and Dordogne | 1 |
| Underwater Potholer | 1 |
| Une Region Karstique d'Ireland: Le Burren | 1 |
| Unit Two Newsletter | 1 |
| Universite de Dijon, Faculty des Lettres, Laboratoire de Geographie | 1 |
| Unterirdische Welten | 1 |
| Uomini Caverne e Abissi | 1 |
| Valle de Carranza, Pozalagua, Torca del Carlista y Venta Lape | 1 |
| Variations in the cave water chemistry at Dan yr Ogof | 1 |
| Vekum Budoucim | 1 |
| Venezuela'73 | 1 |
| Venturing underground: the new speleo's guide | 1 |
| Vercors Caves | 1 |
| Vercors classic French Caving Vol 1, supplement | 1 |
| Vertical | 1 |
| Vertical Caving | 1 |
| Vertical Shafts in Limestone Caves | 1 |
| Victoria Cave | 1 |
| Vietnam 90 | 1 |
| Visiting American Caves | 1 |
| Viso | 1 |
| Vjetrenica | 1 |
| Vodic Kroz Uredine Spilje Hrvatske | 1 |
| Vodic po pristupacnim spiljama i jamama u Hrvatskoj | 1 |
| Voices from The Stone Age | 1 |
| W Jaskiniach | 1 |
| WSG Bulletin | 1 |
| Waitomo Caves | 1 |
| Wales Underground | 1 |
| Wales a study from the air | 1 |
| Wales in Early Times | 1 |
| Wales-Walking | 1 |
| Walks Around the caves and Karst of the Mendip Hills | 1 |
| Walks in The Brecon Beacons | 1 |
| Warplane Wrecks of South Wales and The Marches | 1 |
| Wege in Inntal | 1 |
| Wege in Istrien | 2 |
| Wells Museum Report | 1 |
| Welsh Coal Mines | 1 |
| Welsh Development Agency Report and Accounts 1992-1993 | 1 |
| Welsh Geological Quarterly Vol.1 No 1 | 1 |
| Welsh Geological Quarterly Vol.1 No 2 | 1 |
| Welsh Geological Quarterly Vol.1 No 3 | 1 |
| Welsh Geological Quarterly Vol.1 No 4 | 1 |
| Welsh Geological Quarterly Vol.2 No 1 | 1 |
| Welsh Geological Quarterly Vol.2 No 2 | 1 |
| Welsh Geological Quarterly Vol.2 No 3 | 1 |
| Welsh Geological Quarterly Vol.2 No 4 | 1 |
| Welsh Geological Quarterly Vol.3 No 1 | 1 |
| Welsh Geological Quarterly Vol.3 No 2 | 1 |
| Welsh Geological Quarterly Vol.3 No 3/4 | 1 |
| Welsh Mines and Mining | 1 |
| Welsh Sump Index 3rd edition | 1 |
| Welsh sump index 1986 | 1 |
| Wendron Tin | 1 |
| Wessex Cave Club WCC | 1 |
| West Driefontein, Ordeal by Water | 1 |
| West Midlands Green Belt Map | 1 |
| Western Caver | 1 |
| Western Kentucky Speleological Survey Annual Report 1979 | 1 |
| White Lady Cave - S2010 | 1 |
| White Lady Cave - S2011 | 1 |
| White Scar Cave | 2 |
| Who Was Aveline Anyway | 1 |
| Who's Who in The Environment,England | 1 |
| Wilderness Artist | 1 |
| Wilderness Under The Earth | 1 |
| Wildlife and the law and You | 1 |
| William Pengelly Newsletter | 1 |
| Wire Rope Grip Terminations | 1 |
| Wookey Hole | 1 |
| Wookey Hole 75 years of cave diving | 1 |
| Wookey Hole The Cave of Mystery & History | 1 |
| Wookey Hole its caves and cave dwellers | 1 |
| Wookey Hole the cave and its story | 1 |
| Wookey Hole,The Cave of Mystery & History | 1 |
| Wookey The Caves Beyond | 1 |
| Work in the Woods, Dean's Industrial Heritage | 1 |
| World Archaeology | 1 |
| Wrens Nest National Nature Reserve | 1 |
| Wyandotte cave | 1 |
| Xingwen | 2 |
| Yangtze caves 96 | 1 |
| Year Book | 1 |
| Yochib: The River Cave | 1 |
| Yorkshire Caves and Potholes, No 1 North Ribblesdale | 1 |
| Yorkshire Caves and Potholes, No 2 Under Ingleborough | 2 |
| Yorkshire Field Studies | 1 |
| Yoruk 91, Expedition Speleologique en Turquie | 1 |
| Zauber der hohlen | 1 |
| Zaustavljeno Vrijeme | 1 |
| Zivot Neandertalaca | 1 |
| Zoologie Experimentale | 1 |
| Zpravy | 1 |
| la Cueva Alfredo Jahn | 1 |
| la Espeleologia en Venezuela, Flora Y Fauna Hipogea | 1 |
| la Formation des Cavernes | 1 |
| la Geographie des Terrains Calcaires | 2 |
| la Geologie d'une Partie du Liban Sud | 1 |
| la Grotte Chauvet | 1 |
| la Grotte Cosquer | 1 |
| la Grotte de Clamouse | 2 |
| la Grotte de Lascaux | 1 |
| la Grotte du Sergent | 1 |
| la Histoplasmosis en Venezuela | 1 |
| Swansea & Gower Coalfield 1301-1968 | 1 |
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