CAMERON, R.A.D. British Land Snails : mollusca, Gastropoda : Keys and Notes for the Identification of the Species / R.A.D. Cameron and Margaret Redfern. -- London : The Linnean Society of London, 1976 - 64 p. il. -- (Synopses of the British Fauna ; 6). ISBN 0-12-157050-9 Subjects--Topical Terms: Caracoles - Gran Bretaņa Universal Decimal Class. No.: 594.3(410)