Book
Gray, J.E.
1840a. A Manual of the Land and Fresh-Water Shells of The British Islands, with figures of each of the kinds. by W. Turton. A New Edition, thoroughly revised and much enlarged. Longman, Orme, Brown, Green, and Longmans, London, [Mar-Jun] 1840: [i]-ix, errata, [1]-324, pls. I-XII.
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New: Subsequent spelling
New: Subsequent publication