Chand, Gulab, and J. S. P. Yadav. “A Note on Geology in Relation to Mortality of Fir and Spruce in Chakrata Forest Division”. Indian Forester 96, no. 10 (October 1, 1970): 766–768. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/26324.