Potter's cyclopedia of botanical drugs and preparations Wren, R. C. (Richard Cranfield), 1864-1931 creator text book London Potter & Clarke [1900-1950?] 1900 1950
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ENG Botany, Medical Dictionaries Drugs Materia medica, Vegetable Medicinal plants RS164 .W7 1900z https://www.biodiversitylibrary.org/bibliography/29738 10.5962/bhl.title.29738 OTU