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Changes in Farm Power and Equipment
Eugene George McKibbenReuben Austin Griffin
其他書名
Tractors, Trucks and Automobiles
出版Works Progress Administration, National Research Project, 1938
URLhttp://books.google.com.hk/books?id=EEP7U_DJ0mIC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN
註釋This report traces the development and rate of adoption of three important types of farm automotive equipment and analyzes some of their measurable effects on the organization of agriculture and farm labor requirements.