[1]
T. R. dos S. Hamilton, “Seminal characteristics of rams supplement or not with urea and two sources of sulphur”, Braz. J. Vet. Res. Anim. Sci., vol. 46, no. 1, pp. 54–61, Feb. 2009, doi: 10.11606/issn.1678-4456.bjvras.2009.26750.