Evaluation of the contamination by arsenic and pesticide in the groundwater of the communities of Tecuaname and El Papalonal located in the municipality of La Paz Centro, department of León-2016. torreon [Internet]. 2021 Jun. 16 [cited 2025 Aug. 7];10(28):125-39. Available from: https://revistas.unan.edu.ni/index.php/Torreon/article/view/3095