IAN R. BALL and T. B. REYNOLDSON: Britis
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H. Caspers
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Article
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1983
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John Wiley and Sons
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English
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Keys and notes for the identification of the species.-Synopses of the British Fauna (New Series) edited by DORIS M. KERMACK and R. S. K. BARNES, No. 19. Published for the Linnean Society of London and the Estuarine and Brackish-water Sciences Association.-With 36 figs., 141 pp. Cambridge -London -Ne