Flora of the state of Washington Flora of Washington Piper, Charles V. (Charles Vancouver), 1867-1926 creator text book Washington G.P.O 1906 1906
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ENG Botany Washington (State) QK192 P56 Contributions from the United States National Herbarium, v. 11 https://www.biodiversitylibrary.org/bibliography/21155 10.5962/bhl.title.21155 OTU