Tamakhu, Gopal, and Iswar Man Amatya. “Turbidity Removal by Rapid Sand Filter Using Anthracite Coal As Capping Media”. Journal of Innovations in Engineering Education 4, no. 1 (March 5, 2021): 69–73. Accessed November 23, 2024. https://nepjol.info/index.php/jiee/article/view/35142.