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Machinery Costs on Typical Wheat Farms in Central South Dakota
Erwin O. UllrichWallace G. AanderudJohn T. Sanderson
其他書名
Aurora, Brule, Charles Mix, Gregory, and Jerauld Counties
出版South Dakota State University, Agricultural Experiment Station, Department of Economics, 1968
URLhttp://books.google.com.hk/books?id=cKxWiY0_zdAC&hl=&source=gbs_api