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by C. Leo Hitchcock, Arthur Cronquist, and Marion Ownbey ; illustrated by Jeanne R. Janish
University of Washington Press c1969 University of Washington publications in biology v. 17 . Vascular plants of the pacific northwest ; pt. 1
Available at 13 libraries
University of Washington Press c1959 University of Washington publications in biology v. 17 . Vascular plants of the pacific northwest ; pt. 4