Sharma, Govinda Prasad, Ramesh Prasad Sapkota, Enna Mool, Tulsi Gurung, and Rejina Maskey Byanju. 2021. “Status of Air Pollution over the Last Three Decades in Thimphu City, Bhutan”. Journal of Institute of Science and Technology 26 (1):119-27. https://doi.org/10.3126/jist.v26i1.37839.