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M. Vargová
Department of the Environment, Veterinary Legislation and Economy, 1Clinic of Ruminants University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice The Slovak Republic
G. Kováč
Department of the Environment, Veterinary Legislation and Economy, 1Clinic of Ruminants University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice The Slovak Republic