Changes in composition of American fertilizers, 1880-1932
By: by A.L. Mehring and A.J. Peterson
Contributors: Peterson, A. J. (Avis Jenkin), 1902-
Series: Circular / United States Department of Agriculture -- no. 315; Circular (United States. Dept. of Agriculture) -- no. 315.
Publisher: U.S. Dept. of Agriculture
Published: 1934
Place of publication: Washington, D.C
Language: eng
Number of pages: 20
Subjects: Fertilizers; Analysis
Notes: Caption title.

Bibliography: p. 20.