Gupta S, Khare R, Bajpai O, Rai H, Upreti DK, Gupta RK, et al. Lichen as Bioindicator for Monitoring Environmental Status in Western Himalaya, India. Int. J. Environ. [Internet]. 2016 May 26 [cited 2025 Dec. 6];5(2):1-15. Available from: https://nepjol.info/index.php/IJE/article/view/15001