Mafla AndradeS. X., Andrade TobarJ. C., Navarrete OrtegaA. M., Jauregui SierraD. J., Mejía RomoD. L., and Mera AguasM. C. “Effects of Arsenic on the Aquatic Bacterial Microbiota of the Guayllabamba River in the Heart of Chontal-Intag Community”. AXIOMA, no. 19, Apr. 2019, pp. 28-38, https://axioma.pucesi.edu.ec/index.php/axioma/article/view/539.