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Stall Barns for Dairy Cattle

Thayer CleaverHarold Jonathan ThompsonRobert Gilbert Yeck

出版	U.S. Department of Agriculture, Agricultural Research Service, 1954
URL	http://books.google.com.hk/books?id=Dbwg7sohiF4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN