Maciel Filho, Carlos Leite, and Pedro Luiz Pretz Sartori. “Structural Features of the São Francisco De Assis Region, RS, Brazil”. Ciência e Natura 1, no. 1 (December 10, 1979): 53–66. Accessed September 16, 2024. https://periodicos.ufsm.br/cienciaenatura/article/view/24839.