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Type	Originator	Title	Date
	Casteret,N	Cave men new and old	1951
	Matley,C.A	Geology and Physiography of the Kingston District, Jamaica	1951
	Kowalski,K	Jaskinie Polski 1	1951
	Vachell,E.T	Kents Cavern its Origin and History	1951
	Trombe,F	Les Eaux Souterraines	1951
	Hereford Caving Club (HCC)	Newsletter	1951-
	Stoke on Trent Pothole Club	Newsletter	1951
		Palaces Under The Earth	1951
	National Geographic Magazine	The Caves of a Thousand Buddhas	1951
	Quart.Jour.of the Geol.Soc. of London	The Drainage Systems of Wales and the Adjacent Regions	1951
	Royal Geological Society of Cornwall (Trans. Vol 18 Part 2, pp.146-214)	The Plymouth Limestone; and the Devonian tetracorals	1951