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Type	Originator	Title	Date
	Gies,J	Adventure underground: the story of the world's great tunnels	1962
	Winbolt,S.E	Britain BC	1943
	Hildreth-Werker,H & Werker,J.C	Cave Conservation and Restoration 2006 Edition	2006
	Jasinski,M & Maxwell,B	Caves and Caving	1967
		Die Grabenstetter Grobhohle	1989
	Allen,E.E.& Rutter,J.G	Gower Caves	1948
	Baker, T	How to Photograph Cars	2002
		Jenolan Caves
	Mackovcin,P, Sedlacek,M	Jeskyne	2009
	Jimenez,A.N	La Cueva de Bellamar	1952
	Corbel,J	Les karsts du nord ouest de l'Europe	1957
	Caillault,S, Haffner,D & Krattinger,T	Speleo dans le Vercors (Tome 1)	1997
	Kladnik,Bogdan	Terra Mystica	1991
	Casteret,N	The Descent of Pierre St Martin	1955
	Conway. J, Creedy. D & Hewitt. H	The Double Decker Himalayan Caving Adventure	2019
	Jennings,J.N & Sweeting,M.M	The Limestone Ranges of Fitzroy Basin	1963
	Pennick,N	The Subterranean Kingdom	1981
	Baumann,H	The caves of the great hunters	?
	Lyon,B	Venturing underground: the new speleo's guide	1983