Cantagalo, M. “The First Records on the Socioenvironmental Degradation in the Amazon: The Amazon Depression After the First Cycle of Rubber (1920-1940) in the Data of the Brazilian General Censuses”. Revista Hipótese, vol. 6, Jan. 2020, pp. 127-52, https://revistahipotese.editoraiberoamericana.com/revista/article/view/63.