Singh, Alpana, and Basant K. Misra. “Fluorescence Microscopic Investigations of the Main Lignite Seam from the Neyveli Lignite Field, Tamil Nadu, India”. Journal of Palaeosciences 48, no. (1-3) (December 31, 1999): 155–162. Accessed November 23, 2024. https://jpsonline.co.in/index.php/jop/article/view/1301.