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Google圖書搜尋
Studies in Dairy Production Based on the Records Secured in the Wisconsin Dairy Cow Competition, 1909-1911
Charles Josiah Galpin
Edwin Bret Hart
Edwin George Hastings
Fritz Wilhelm Woll
James Johnson
John Langley Sammis
William Edward Tottingham
Aksel Theodor Bruhn
Conrad Hoffmann
James Garfield Halpin
Alice Catherine Evans
出版
Agricultural Experiment Station of the University of Wisconsin
, 1912
URL
http://books.google.com.hk/books?id=k5ZRAQAAMAAJ&hl=&source=gbs_api