A dictionary of the flowering plants and ferns Willis, J. C. (John Christopher), 1868-1958 creator text book Cambridge The University Press 1919 1919 4th ed., rev. and rewritten.
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ENG Botany Dictionaries QK9 .W73 1919 Cambridge biological series https://www.biodiversitylibrary.org/bibliography/1428 5266588 10.5962/bhl.title.1428 DLC