Sousa, J.C. de and Darsie, G. 2014. Mineral deficiency in cattle in Roraima, Brazil. II. Iron and manganese. Pesquisa Agropecuaria Brasileira. 21, 7 (Apr. 2014), 763–769. DOI:https://doi.org/10.1590/S1678-3921.pab1986.v21.14888.