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Germ Content of Milk. I. As Influenced by the Factors at the Barn. By M.J. Prucha and H.M. Weeter. II. As Influenced by the Utensils. By M.J. Prucha, H.M. Weeter, and W.H. Chambers
出版1917
URLhttp://books.google.com.hk/books?id=6gU40AEACAAJ&hl=&source=gbs_api