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Testing the Dairy Cow

Augustine Dawson SelbyCarlos Grant WilliamsCassius Clay HaydenJohn W. AmesLoring Hapgood GoddardWalter Oscar GloyerT. R. MiddaughWilliam Allison Lloyd

出版	Ohio Agricultural Experiment Station, 1915
URL	http://books.google.com.hk/books?id=fuZPAQAAMAAJ&hl=&source=gbs_api