Bañares, Adam Christopher B., and Ma. Lourdes C. Alvarez. “DETECTION OF THE PRESENCE AND CONCENTRATION OF HEAVY METALS IN SELECTED RIVERS IN THE PROVINCE OF SAMAR”. International Journal of Research -GRANTHAALAYAH 3, no. 9 (September 30, 2015): 70–86. Accessed April 30, 2024. https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/IJRG15_B09_78.