TESTING THE PREVALENCE OF BVDV INFECTION IN LARGE AND SMALL CATTLE HERDS IN SOUTH BACKA AND SREM DISTRICT. AVM [Internet]. 2008 Dec. 29 [cited 2026 Oct. 16];1(2):17-36. Available from: https://avm.niv.ns.ac.rs/index.php/e-avm/article/view/228