JAROSIEWICZ, Anna. TRANSFORMATION OF THE WATER QUALITY IN THE SŁUPIA RIVER (POLAND). ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 2, p. 64–70, 2015. DOI: 10.17770/etr2009vol2.1024. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/1024.. Acesso em: 19 apr. 2024.