Shrestha, Rajeshwar Man. “Determination of Methylene Blue Number to Characterize the Lapsi Based Activated Carbon Prepared by Chemical Carbonization”. Journal of the Institute of Engineering 15, no. 1 (February 16, 2020): 177–180. Accessed September 18, 2024. https://nepjol.info/index.php/JIE/article/view/27727.