A Survey on Antibiotic usage in Pigs and Poultry Birds in Abia State, Nigeria. Global Journal of Medical Research, [S. l.], v. 14, n. C5, p. 11–17, 2014. Disponível em: https://medicalresearchjournal.org/index.php/GJMR/article/view/745. Acesso em: 10 aug. 2026.