The willows of Ohio; a monograph Griggs, Robert F. (Robert Fiske), 1881-1962 creator text book Columbus, Ohio The Academy 1905 1905
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ENG Ohio Shrubs Trees Willows QK495 S16 G7 Proceedings of the Ohio State Academy of Science, v. 4, pt. 6. Special papers, no. 11 https://www.biodiversitylibrary.org/bibliography/17185 10.5962/bhl.title.17185 OTU