SEROPREVALENCE AND RISK FACTORS OF BOVINE RESPIRATORY SYNCYTIAL VIRUS IN DAIRY AND BEEF CATTLE HERDS IN REPUBLIC OF BULGARIA. TRAKIA JOURNAL OF SCIENCES, [S. l.], v. 22, n. 1, p. 6, 2024. DOI: 10.15547/tjs.2024.01.002. Disponível em: https://tjs.trakia-uni.bg/index.php/tjs/article/view/2.. Acesso em: 23 nov. 2024.