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Type	Originator	Title	Date
	Sivelli,M & Vianelli,M	Abissi Delle Alpi Apuane	1982
	Kitching,J.W	Bone, Tooth & Horn Tools of Palaeolithic Man	1963
	Boyd Dawkins,W	Cave Hunting	1874
	Waltham,T & Lowe,D	Caves and Karst of the Yorkshire Dales Vol 1	2013
	Cornwell,J	Collieries of South Wales : 1	2001
	Encinas,J. A	Corpus Cavernico Mayoricense	2014
		Map of Southern Britain in The Ice Age	1967
		Salzburger Hohlenbuch (Band 4)	1985
	Sigma Leisure	The Caves of Northumberland	2019