Sah, S. and Dutta, S. (1967) “Palynostratigraphy of the Tertiary Sedimentary Formations of Assam: 2. Stratigraphic significance of Spores and Pollen in the Tertiary Succession of Assam”, Journal of Palaeosciences, 16((1-3), pp. 177–195. doi: 10.54991/jop.1967.518.