01244cam a22003491a 4500 agr48000040 DLC 20260227111008.0 831107s1947 dcuab s f000 0 eng agr48000040 (OCoLC)10104177 DLC IMolD DNAL DLC premarc S751 .C6 1 Ag84M no.630 N200 E100 Cooper, M. R. (Martin Reese), 1887- Progress of farm mechanization / by Martin R. Cooper, Glen T. Barton, and Albert P. Brodell. Washington, D.C. : U.S. Dept. of Agriculture, 1947. 101 p. : ill., maps ; 23 cm. Miscellaneous publication / United States Department of Agriculture ; no. 630 Contribution from Bureau of Agricultural Economics. Cover title. Agriculture United States. Agricultural machinery. Agriculture Economic aspects United States. Barton, Glen T. Brodell, Albert P. (Albert Perry), 1895- Farm mechanization. Miscellaneous publication (United States. Department of Agriculture) ; no. 630. 10760 10760