Biodiversity Heritage Library
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By "Isaac, Leo A. (Leo Anthony), 1892-1970"
Douglas fir research in the Pacific Northwest, 1920-1956 :
By: Isaac, Leo A. - Fry, Amelia R. - Bancroft Library.
Publication info: Berkeley, Calif. :University of California,c1967.
Contributed by: University of California Libraries (archive.org)