The prosobranch molluscs of Britain and Denmark: 3. Neritacea, Viviparacea, Valvatacea, terrestrial and freshwater Littorinacea and Rissoacea
Fretter, V.; Graham, A. (1978). The prosobranch molluscs of Britain and Denmark: 3. Neritacea, Viviparacea, Valvatacea, terrestrial and freshwater Littorinacea and Rissoacea. J. Molluscan Stud. Suppl. 5: 102-150
In: Journal of Molluscan Studies. Supplement. Oxford University Press: Oxford. ISSN 0263-5666, more
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