7 books
Papers on North American Helicidæ, and on the Geographical Distribution of West India Land Shells (Classic Reprint)
Papers on North American Helicidæ
Papers on North American Helicid], and on the Geographical Distribution of West India Land Shells
Remarks on Classifications of North American Helices by European Authors, and Especially by H. and A. Adams and Albers...
Land and Fresh Water Shells of North America
Papers on North American Helicidae, and on the Geographical Distribution of West India Land Shells
Collected Papers Volume 1
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