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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. Braz. J. Vet. Res. Anim. Sci. 1993, 30 (supl.), 243-247. https://doi.org/10.11606/issn.1678-4456.bjvras.1993.52039.