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Type	Originator	Title	Date
	Achleitner,A & Heibl,E (Ed.)	Hohlenkundeliche vereinsinformation Hallstatt Obertraun	1986
	Casteret,N	My Caves	1947
	Allshorn,S & Swire,P	Northern Caves the Three Counties System and the North West	2017
	Allshorn,S & Swire,P	Northern Caves the Three Counties System and the North West	2017
		Proc. of the 14th International Congress of Speleology, Athens (Volume 1)	2005
	Lord,I	Rich Mountains of Lead	2018
	Dobson,D. P	Somerset	1931
	Lyell,C	The Antiquity of Man	1873
	Baker,E.A & Balch,H.E	The Netherworld of Mendip	1907
	Hanwell,J.D & Newson,M.D	The great storms and floods of July 1968 on Mendip	1970
	Ebbs,C	Underground Clwyd	2000
	Kortman,B & Parma,C	W Jaskiniach	1990
	Hofman,P	Wege in Inntal	2005
	Morris,C	Work in the Woods, Dean's Industrial Heritage	2002