Vitti, Dorinha Miriam Silber Schmidt, Adibe Luiz Abdalla, Cyro ferreira Meirelles, José Cleto da Silva Filho, and Helder Louvandini. 1992. “True Phosphorus Absorption from Different Sources for Sheep, Using Radiophosphorus (P-32)”. Pesquisa Agropecuaria Brasileira 27 (10):1405-8. https://doi.org/10.1590/S1678-3921.pab1992.v27.3784.