Method and procedure of soil analysis used in the Division of Soil Chemistry and Physics
By: by W.O. Robinson
Series: Circular / United States Department of Agriculture -- no. 139; Circular (United States. Dept. of Agriculture) -- no. 139.
Publisher: U.S. Dept. of Agriculture
Published: 1930
Place of publication: Washington, D.C
Language: eng
Number of pages: 20
Subjects: Soils; Analysis
Notes: Caption title.

"Contribution from Bureau of Chemistry and Soils."

Bibliography: p. 18-19.