Phosphorus increases wheat yields.
Contributors: Washington State University. Cooperative Extension Service.
Series: Extension mimeo -- 2840.; Extension mimeo (Washington State University. Cooperative Extension) -- 2840.
Publisher: Cooperative Extension Service, College of Agriculture, Washington State University
Published: 1967
Place of publication: Pullman
Language: eng
Notes: Authors: David L. Guettinger, Fred E. Koehler.

Caption title.

"June 1967."

"E. M. 2840."