Alves, Lívia Navegantes, et al. “CHANGES IN CATTLE PRODUCTION PRACTICES THROUGH THE EVOLUTION OF THE AGRICULTURAL FRONTIER IN THE SOUTHEASTERN STATE OF PARÁ”. Science & Technology Journals, vol. 29, no. 1, Jan. 2012, pp. 243-68, https://doi.org/10.35977/0104-1096.cct2012.v29.14550.