[1]
J. L. da Rocha, V. H. Barnabe, R. C. Barnabe, E. H. Madureira, C. A. de Oliveira, and J. A. Visintin, “Progesterone levels in fat-eree milk of cows during post partum period and early pregnancy diagnosis”, Braz. J. Vet. Res. Anim. Sci., vol. 30, no. supl., pp. 243–247, Dec. 1993, doi: 10.11606/issn.1678-4456.bjvras.1993.52039.