Soil survey of the Grande Ronde Valley area, Oregon /
By A. E. Kocher, W. L. Powers and A. O. Alben.

APA Citation

Kocher, A. E. (Arthur E.)., Alben, A. O., Powers, W. L., Oregon State University. Agricultural Experiment Station., United States. Soil Conservation Service. (1926). Soil survey of the Grande Ronde Valley area, Oregon. Washington, D.C.: U.S. Govt. Print. Off..

MLA Citation

United States. Soil Conservation Service, et al.. Soil Survey of the Grande Ronde Valley Area, Oregon. Washington, D.C.: U.S. Govt. Print. Off., 1926.