“Agro-Extraction in the Valley of the Urucuia River (state of Minas Gerais):: A Study of Pluriactivities and Multifunctionality in the Cerrado Biome”. Sustainability in Debate, vol. 5, no. 3, Dec. 2014, pp. 37-55, https://doi.org/10.18472/SustDeb.v5n3.2014.11370.