Nonhare, B. P. “Deep Concern of H.E. Dr. A.P.J. Abdul Kalam the President of India about Bio-Fuel in Chhattisgarh”. Indian Forester 133, no. 2 (February 1, 2007): 295–297. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/1019.