Use of tractor power, animal power, and hand methods in crop production
By: by A.P. Brodell and J.A. Ewing
Contributors: Ewing, J. A., joint author; United States. Bureau of Agricultural Economics
Series: FM -- 69; FM (United States. Bureau of Agricultural Economics) -- 69.
Publisher: U.S. Dept. of Agriculture, Bureau of Agricultural Economics
Published: 1948
Place of publication: Washington, D.C
Language: eng
Number of pages: 32
Subjects: Tractors; Domestic animals
Notes: Cover-title.

Mimeographed.