WALKER, D. Diagnosing infertility in a dairy herd. The Bovine Practitioner, [S. l.], n. 21, p. 187–191, 1986. DOI: 10.21423/bovine-vol0no21p187-191. Disponível em: https://bovine-ojs-tamu.tdl.org/bovine/article/view/1285. Acesso em: 17 aug. 2024.