Arsenic and Fluoride in Groundwater from Chihuahua: Origin, Enrichment, and Possible Treatments: Arsenic and Fluoride in Groundwater from Chihuahua: Origin, Enrichment, and Possible Treatments. TECNOCIENCIA Chih. 2021, 15 (2), e 828. https://doi.org/10.54167/tecnociencia.v15i2.828.