British land snails: Mollusca: Gastropoda
Cameron, R.A.D.; Redfern, M. (1976). British land snails: Mollusca: Gastropoda. Synopses of the British Fauna, 6. Field Studies Council: Shrewsbury. ISBN 0-12-157050-9. 64 pp.
Deel van: Barnes, R.S.K.; Crothers, J.H. (Ed.) Synopses of the British Fauna. Linnean Society of London: London; New York. ISSN 0082-1101, meer
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