Association between bovine-leukosis virus seroprevalence and herd-level productivity on US dairy farms

Author: Ott S.L.   Johnson R.   Wells S.J.  

Publisher: Elsevier

ISSN: 0167-5877

Source: Preventive Veterinary Medicine, Vol.61, Iss.4, 2003-12, pp. : 249-262

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