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Google圖書搜尋
Wintering Feeder Calves in Arkansas
Ellis Scott Ruby
Arkansas Agricultural Experiment Station
Maurice Lee Ray
Charles E. Mabry
出版
Agricultural Experiment Station, University of Arkansas, College of Agriculture
, 1951
URL
http://books.google.com.hk/books?id=Yy83zgEACAAJ&hl=&source=gbs_api