You can do simple searches using this form:

Type	Originator	Title	Date
	Balcombe, G	A glimmering in darkness	1987
		Grottes de France	1993
	Galera,J & Lieutaud,J	Grottes et Avens de la Montagne de la Sellette	1983
		Inventaire Speleologique Du Doubs Tome 4	2004
	Jolfre,J	Pyrenees Souterraines	1990
	Alfie	Reflections	1971
	McDonald. M & Price. D (compilers)	Somerset Sump Index 4th edition	2008
	Wilkens, Culver, Humphreys	Subterranean Ecosystems (Ecosystems of the World vol. 30)	2000