Food crops need phosphate
Contributors: United States. Department of Agriculture. Production and Marketing Administration. Field Service Branch
Series: AIS -- no. 46; AIS (Series) -- no. 46.
Publisher: U.S. Department of Agriculture, Production and Marketing Administration, Field Service Branch
Published: 1946
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Phosphatic fertilizers; Agricultural Conservation Program
Notes: Cover title.

"January 1946."