You can do simple searches using this form:

Type	Originator	Title	Date
	Monico,Paul	Northern Sump Index	1995
	Hill, E & Hall,A	Northern Sump Index 2015	2015
	McDonald. M & Price. D (compilers)	Somerset Sump Index 4th edition	2008
	Cave Diving Group	Sump Index
	Price. D (compiler)	Welsh Sump Index 3rd edition	2006
	Morris,D & Adams,J	Welsh sump index 1986	1986