Biodiversity Heritage Library mailto:biodiversitylibrary@gmail.com Manual of the botany of the northern United States Gray, Asa, 1810-1888 creator text book Cambridge University Library New York [s.n.] 1856 1856 2nd ed.
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 UND Manuscript material https://www.biodiversitylibrary.org/item/106369 10.5962/bhl.title.50405 Cambridge University Library https://www.biodiversitylibrary.org/item/106369 https://www.biodiversitylibrary.org/pagethumb/34075010 In copyright