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Type	Originator	Title	Date
	Daoxian,Y	A Brief Introduction to China's Karst Research	1981
	Beck,H	Beneath the Cloud Forests	2003
	Bath,D	Cheddar Gorge	1955
	Stach,E et al.	Coal Petrology	1982
	Encinas,J. A	Corpus Cavernico Mayoricense	2014
		ECO Resin Rigging Guide	1994
	Guarchi,J.M & Payares,Y.R	Excavation en el Caney del Castillo	1964
	Audra,P (ed)	Grottes & Karsts de France	2010
	Franke,H.W	In Der Hohlen Dieser Erde	1978
	Waltham,A.C, Simms,M. J, Farrant,A. R & Goldie. H.S	Karst & Caves of Great Britain	1997
	Gams,I	Kras	1974
	Boyde,S. and Flandin,J	Le Tour de la Coume Ouarnede en 24 Cavites	1994
	Le Guen,F	Les scaphandriers du desert	1986
	Clement,S & Vennarecci,P	Reseau Felix Trombe - Henne Morte	2003
		Salzburger Hohlenbuch, Band 1	1975
	Hanwell,J, Price,D & Witcombe,R	Wookey Hole 75 years of cave diving	2010