CHURCH, T. L.; JANZEN, E. D. A System for calving heifers on a large commercial ranch. The Bovine Practitioner, [S. l.], v. 1978, n. 13, p. 40–44, 1978. DOI: 10.21423/bovine-vol1978no13p40-44. Disponível em: https://bovine-ojs-tamu.tdl.org/bovine/article/view/1886. Acesso em: 16 aug. 2024.