Marines Castillo, Edrai Elburit, Erick Iroel Heredia Carrillo, and Claudia Garduño GarcÍa. 2023. “Construction of a Solar Still Prototype to Reduce Extreme Water Hardness in the Mayan Community Ejido 20 De Noviembre”. European Journal of Engineering and Technology Research 8 (6):18-23. https://doi.org/10.24018/ejeng.2023.8.6.3115.