You can do simple searches using this form:

Type	Originator	Title	Date
	Fantoli,J.L	Cavernes des Bauges	1991
	Taylor,M.R	Dark Life	2000
	John Malcolm	Elementary Surveying	1966
	Tyler,I	Honister Slate, The History of a LakeLand Slate Mine	1994
		Las Cuevas con Arte Paleolitico en Cantabria	2010
	Brook,D, Griffiths,J, Long,M.H & Ryder,P.F	Northern Caves Vol 3 (1994)	1994
		Salzburger Hohlenbuch, Band 3	1979
	Onac,B.P	Scarisoara	2007
	Onac,Bogdan,P	Scarisoara	2007
	Jankovic,I, et al.	The Project Archaeolim	2017
	Mangold,T & Penycate,J	The Tunnels of Cu Chi	1986