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Type	Originator	Title	Date
	Breuill,Abbe	Four hundred centuries of cave art	1952
	Jimenez,A.N	La Cueva de Bellamar	1952
	Tazieff,H	Le Gouffre de la Pierre Saint Martin	1952
	Casteret,N	Ten Years Under the Earth	1952
	Casteret,N	Ten years under the earth	1952
		The Caverns of Upper Ease Gill	1952
	Knight,F.A	The seaboard of Mendip	1952
	Trombe,F	Traite de Speleologie	1952
	Rev.de Geog.de Lyon	Une Region Karstique d'Ireland: Le Burren	1952