Samal, Milan, Shreeja Lopchan Lama, Subodh Luitel, and Anish Ghimire. 2020. “A Pilot Scale Study of Greywater Treatment Using Gravel Sand Followed by Granular Activated Carbon”. Kathmandu University Journal of Science, Engineering and Technology 14 (2). https://doi.org/10.3126/kuset.v14i2.63459.