NIR, O. Herd health problems: The epidemiological approach. The Bovine Practitioner, [S. l.], v. 1991, n. 26, p. 42–44, 1991. DOI: 10.21423/bovine-vol1991no26p42-44. Disponível em: https://bovine-ojs-tamu.tdl.org/bovine/article/view/2326. Acesso em: 14 jul. 2024.