Khanna, D.R., Rakesh Bhutiani, Gagan Matta, Vikas Singh, and Fouzia Ishaq. 2012. “Seasonal Variation in Physico-Chemical Characteristic Status of River Yamuna in Doon Valley of Uttarakhand”. Environment Conservation Journal 13 (1&2):119-24. https://doi.org/10.36953/ECJ.2012.131222.