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Sah, S. and Jain, K. 1964. Jurassic spores and pollen grains from the Rajmahal Hills, Bihar, India: With a discussion on the age of the Rajmahal Intertrappean beds. Journal of Palaeosciences. 13, (1-3) (Dec. 1964), 264–290. DOI:https://doi.org/10.54991/jop.1964.702.