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Costs of Reducing Grain Feeding of Beef Cattle

Ray F. BrokkenCarl W. O'ConnorThomas L. Nordblom

出版	U.S. Department of Agriculture, Economics, Statistics, and Cooperatives Service, 1980
URL	http://books.google.com.hk/books?id=E38-AAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN