Bharadwaj, D.C., and S.C. Srivastava. “Sporological Correlation of Coal Seams in Some Blocks of Sohagpur Coalfield, M.P. India”. Journal of Palaeosciences 19, no. 1-3 (December 31, 1970): 1–28. Accessed November 14, 2024. https://www.jpsonline.co.in/index.php/jop/article/view/851.