Rodríguez, R. ., Morales-Arredondo, I. ., & Rodríguez, I. (2015). Geological Differentiation of Groundwater Threshold Concentrations of Arsenic, Vanadium and Fluorine in El Bajio Guanajuatense, Mexico. Geofísica Internacional, 55(1), 5–15. https://doi.org/10.22201/igeof.00167169p.2016.55.1.1708