Bose, M.N., and S.C.D. Sah. “Some Pteridophytic Remains from the Rajmahal Hills, Bihar”. Journal of Palaeosciences 16, no. (1-3) (December 31, 1967): 12–28. Accessed July 29, 2024. https://jpsonline.co.in/index.php/jop/article/view/501.