Natural contamination by arsenic in the groundwater of the rural community "La Fuente", to suggest and promote the use of alternative sources of safe water, municipality La Paz Centro, León, Nicaragua. torreon [Internet]. 2020 Jan. 13 [cited 2025 Aug. 6];8(23):58-72. Available from: https://revistas.unan.edu.ni/index.php/Torreon/article/view/3237