[1]
Rocha, J.L. da, Barnabe, V.H., Barnabe, R.C., Madureira, E.H., Oliveira, C.A. de and Visintin, J.A. 1993. Progesterone levels in fat-eree milk of cows during post partum period and early pregnancy diagnosis. Brazilian Journal of Veterinary Research and Animal Science. 30, supl. (Dec. 1993), 243-247. DOI:https://doi.org/10.11606/issn.1678-4456.bjvras.1993.52039.