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The Cost and Utilization of Power on Farms where Tractors are Owned
Howard Ross TolleyLe Roy August Reynoldson
其他書名
286 Farms, Ohio, Indiana, Illinois, 1920
出版U.S. Department of Agriculture, 1921
URLhttp://books.google.com.hk/books?id=TFRCAQAAMAAJ&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN