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Type	Originator	Title	Date
	Stratford,T	Caves of South Wales	1995
	Siffre,M	Clamouse	1990
	Puch,C	Exploracions, Atlas de las Grandes Cavidades Espanolas 1987	1987
		Inventaire Speleologique Du Doubs Tome 4	2004
	Coman,D & Craciun,V	Pesteri Vintului	1978
	Parkyn,E. A	Prehistoric art	1915
	Author	Slojame	2018
	Salvayre,Henri	Speleologie et Hydrogeologie des Massifs Calcaires des Pyrenees-Orientales	1977
	Knight,F.A	The seaboard of Mendip	1952