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Preliminary Report on Studies in Developing Farms on Western South Dakota Ranges for the Years 1921 and 1922

C. G. Worsham

出版	Department of Agriculture in cooperation wth date of publication not identified State COllege of Agriculture and Mechanic Arts, 1923
URL	http://books.google.com.hk/books?id=L1e3MAAACAAJ&hl=&source=gbs_api