Piyadasa, Ranjana U K, and M. D. C. Fernando. “Groundwater Pollution Vulnerability by Drastic Method in Ja-Ela Divisional Secretorial Division, Sri Lanka”. European Journal of Science, Innovation and Technology 1, no. 5 (November 26, 2021): 17-22. Accessed December 4, 2024. https://ejsit-journal.com/index.php/ejsit/article/view/33.