Beltrán Machado, Johnny, and Juan M. Aguilar. “Analysis of Heavy Metal Contamination in the City of Cuenca through the Use of Bioindicators”. ACI Avances en Ciencias e Ingenierías 14, no. 2 (December 12, 2022). Accessed May 1, 2026. https://revistas.usfq.edu.ec/index.php/avances/article/view/2600.