Fuel consumed and work performed by farm tractors
By: by A. P. Brodell and M. R. Cooper
Contributors: Cooper, M. R. (Martin Reese), 1887-; United States. Bureau of Agricultural Economics
Series: F. M -- 32; FM (United States. Bureau of Agricultural Economics) -- 32.
Publisher: U.S. Dept. of Agriculture, Bureau of Agricultural Economics
Published: 1942
Place of publication: Washington, D.C
Language: eng
Number of pages: 29
Subjects: Tractors
Notes: Cover title.

"March 1942."