“Contamination Levels in Three Sectors of Villavicencio Using the Geoaccumulation (Igeo) Index”. Orinoquia 19, no. 1 (January 1, 2015): 109–117. Accessed April 15, 2026. https://orinoquia.desarrollo-ojs1.metadatos.org/index.php/orinoquia/article/view/344.