PHYSICAL-CHEMICAL QUALITY OF THE SURFACE WATERS OF THE RIO VIEJO SUB-BASIN. Revista Científica Tecnológica - ISSN: 2708-7093, [S. l.], v. 1, n. 2, p. 16–24, 2018. Disponível em: https://revistas.unan.edu.ni/index.php/ReVTec/article/view/3714. Acesso em: 9 aug. 2025.