Gilkey, Helen M. Handbook of northwestern plants / by Helen M. Gilkey and La Rea J. Dennis - Corvallis : Oregon State University Bookstores, 1980 - 507 p. : ill. ; 21 cm. An outgrowth of the author's Handbook of Northwest flowering plants ISBN: 0882460412 Subjects--Topical Terms: Botany--OregonBotany--Washington