[1]
Bhardwaj, D. and Tiwari, R. 1967. Sporological Correlations of Coal Seams in Saunda and Gidi Areas of South Karanpura Coalfield, Bihar, India. Journal of Palaeosciences. 16, (1-3) (Dec. 1967), 38–55. DOI:https://doi.org/10.54991/jop.1967.503.