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Google圖書搜尋
Loose Versus Conventional Housing of Milk Cows
Bruce Robert Poulton
Dean Fanning Tuthill
Geddes W. Simpson
Herman Henry Brugman
Homer Bastian Metzger
Louis A. Ploch
Moody Francis Trevett
Robert I. Ashman
Winston E. Pullen
其他書名
An Economic Analysis
出版
Maine Agricultural Experiment Station
, 1960
URL
http://books.google.com.hk/books?id=iGKwpBZKq6wC&hl=&source=gbs_api