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Composition, rating and conservation of Willamette Valley soils
Oregon State College. Agricultural Experiment Station; Powers, W. L. (Wilbur Louis), b. 1887; Ruzek, C. V. (Charles Vladis), 1887-1968; Jones, J. S. (J. Shirley), 1876-
Published July 1939. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Subject:Soils -- Oregon -- Willamette River Valley
