1.
Maskey-Byanju R, Gewali MB, Manandhar K. Low cost passive monitoring of sulphur dioxide in ambient air: An effort from developing world. Nep J Environ Sci [Internet]. 2013 Dec. 9 [cited 2021 Oct. 27];1(1):21-6. Available from: https://www.nepjol.info/index.php/njes/article/view/36544