Forest trees of the Pacific slope Sudworth, George B. (George Bishop), 1864-1927 creator text book Washington Govt. Print. Off 1908 1908
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ENG Horticultural Society of New York gift, June 2006. K. K. Mackenzie collection. Frodin 2 : 190. Gleason, Henry A. Frick, Henry Clay II, 2007. At head of title: U.S. Department of Agriculture. Forest Service. Forests and forestry Pacific coast Trees QK481 .S9 https://www.biodiversitylibrary.org/bibliography/40776 2217951 agr08000974 10.5962/bhl.title.40776 U.S. Dept. of Agr. Library