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Inputs and returns as related to systems of farming, and to the production of crops, livestock, and livestock products in Western Illinois, 1948

H. C. M. CaseG. L. JORDANJ. B. CUNNINGHAMR. W. BartlettWm. H. Heneberry

出版	1950
URL	http://books.google.com.hk/books?id=4t9PAQAAMAAJ&hl=&source=gbs_api