Sanitary Quality of the Surface and Subterranean Waters of the Sub-basin of the Old River. Revista Científica Tecnológica - ISSN: 2708-7093, [S. l.], v. 1, n. 1, p. 11–18, 2018. Disponível em: https://revistas.unan.edu.ni/index.php/ReVTec/article/view/3719. Acesso em: 8 aug. 2025.