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Shedding of Mycobacterium Avium Subsp. Paratuberculosis in Naturally Exposed Dairy Calves and Associated Risk Factors

出版	Michigan State University. Large Animal Clicical Sciences (Epidemeiology), 2009
URL	http://books.google.com.hk/books?id=TI9G--7N5aAC&hl=&source=gbs_api