ROCHA, J. L. da; BARNABE, V. H.; BARNABE, R. C.; MADUREIRA, E. H.; OLIVEIRA, C. A. de; VISINTIN, J. A. Progesterone levels in fat-eree milk of cows during post partum period and early pregnancy diagnosis. Brazilian Journal of Veterinary Research and Animal Science, [S. l.], v. 30, n. supl., p. 243-247, 1993. DOI: 10.11606/issn.1678-4456.bjvras.1993.52039. Disponível em: https://www.revistas.usp.br/bjvras/article/view/52039. Acesso em: 28 jan. 2023.