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By: Washburn, Raymond Secord, - Scudder, H. D. (Henry Desborough),Edition:Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1926Volume: no.1447 (1926)Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Costs Farm mechanization Oregon Sherman County WheatBHL Collections:
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By: Quaintance, Hadly Winfield,Edition:Publication info: [Madison], Univ. of Wisconsin, 1904Volume:Series:Holding Institution: University of Toronto - Robarts LibrarySubjects: Agricultural laborers Agriculture Economic aspects Farm mechanization Labour and labouring classes United StatesBHL Collections:
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By: Tolley, H. R. (Howard Ross), - Humphries, W. R. (Walter Raymond),Edition:Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1924Volume: no.1202 (1924)Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Farm mechanization Farm tractors Horses Kansas Nebraska OklahomaBHL Collections: