Vertical zonation in the Umatilla area, Oregon
By: [by W.L. Powers].
Contributors: Oregon State College. Agricultural Experiment Station.; Western Society of Soil Science.
Publisher: Oregon State College, Agricultural Experiment Station
Published: 1940
Place of publication: [Corvallis, Or
Language: eng
Subjects: Soils -- Oregon -- Umatilla County.
Notes: Cover title.

"For presentation before Western Society of Soil Science, Seattle -  6/17/40."--Leaf [1].

Includes bibliographical references (leaf 3).