Interpretation of soil test nitrogen for irrigated crops in central Washington
By: [by A.I. Dow, D.W. James and C.E. Nelson].
Series: Extension mimeo -- 3076.; Extension mimeo (Washington State University. Cooperative Extension) -- 3076.
Publisher: Cooperative Extension Service, College of Agriculture, Washington State University
Published: 1969
Place of publication: Pullman
Language: eng
Notes: Cover title.

"March 1969."

"E.M. 3076."