Palma, João Victor Nolasco, Waterloo Pereira Filho, Gisieli Kramer, and Eduardo Andre Kaiser. “Evaluation of Transparency and PH of Ernestina Power Plant Watershed – Rio Grande Do Sul”. Ciência e Natura 39 (November 29, 2017): 164–170. Accessed January 27, 2025. https://periodicos.ufsm.br/cienciaenatura/article/view/27928.