Background on U.S. agriculture
Edition: Rev. September 1963.
Series: Leaflet / United States. Dept. of Agriculture -- no. 491; Leaflet (United States. Dept. of Agriculture) -- no. 491.
Publisher: U.S. Dept. of Agriculture
Published: 1963
Place of publication: Washington, D.C
Language: eng
Subjects: Agricultural productivity
Notes: Cover title.

"Prepared by Office of Information"--P. [7].