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Type	Originator	Title	Date
	Bohinec,V	150 Let, Postojnske Jama 1818-1968	1968
	Bohinec,V	150 Let, Postojnske Jama 1818-1968	1968
	Scientific Malaysian	Batu Caves	1968
	De Block,G & Fontaine,J.P	Bibliographie Speleologique Belge 1907-1964	1968
		British Caenozoic fossils	1968
	Burman,J	Cango	1968
	E.A.Lane (Helictite v6(2))	Geomorphology of Barber Cave, Cooleman Plain, New South Wales	1968
	Karstz Es Barlangkutatas, Budapest	Karst Regions in Indonesia	1968
	Ford,T.D & Rieuwerts,J. H (eds)	Lead mining in the Peak district	1968
	Fenelon,P	Les Reliefs Karstiques du Perigord	1968
	Cambrian Archaeological Association [Archaeologia Cambrensis 117, pp.18-71]	Ogof yr Esgyrn	1968
	Cambrian Archaeological Association [Archaeologia Cambrensis 117, pp.18-71]	Ogof yr esgyrn excavations	1968
	Geographical Magazine (June)	Riddle of the Welsh Caves	1968
	Graf,F	Stockage de Calcium, Crustaces Amphipodes	1968
	Brown,I.J	The Coalbrookdale Coalfield, Catalogue of Mines	1968
	Bibby,G	The Testimony of the Spade	1968
	Revue de Géographie Alpine	Tourbieres et morphologie karstique dans la Region de Sligo	1968