Paz-Barzola D, Escobar-Segovia K, Jiménez Oyola S. Soil quality assessment in populated areas near the gold mining zone of Ponce Enriquez. Enfoque UTE [Internet]. 2022 Oct. 1 [cited 2024 Nov. 7];13(4). Available from: http://ingenieria.ute.edu.ec/index.php/revista/article/view/811