Maharjan, Anisha, and Anish Ghimire. “Application of Activated Effective Microorganism, Mudball and Biosand Filter for the Treatment of Dye Wastewater”. Nepal Journal of Environmental Science 9, no. 1 (July 4, 2021): 41–48. Accessed November 27, 2021. https://nepjol.info/index.php/njes/article/view/37376.