Bello, Francisco, and Lourdes Echevarría. 2022. “Evaluation of Antibiotic-Resistant Bacteria and Physicochemical Parameters in Groundwater, Impacted by Dairy Farms in Hatillo, Puerto Rico”. PSM Biological Research 8 (1):9-27. https://psmjournals.org/index.php/biolres/article/view/648.