Balarin, M.R.S. et al. 1997. Calcium and Phosphorus Percent Clearance Ratios of Nelore (Zebu) Cattle Related to Sex and Age. Semina: Ciências Agrárias. 18, 1 (Jan. 1997), 33–39. DOI:https://doi.org/10.5433/1679-0359.1997v18n1p33.