Manum, Svein B. “13th Sir Albert Charles Seward Memorial Lecture: Palynology, Organic Petrology and Petroleum - A Palaeobotanists View”. Journal of Palaeosciences 31, no. (1-3) (December 31, 1983): 100–107. Accessed November 24, 2024. https://jpsonline.co.in/index.php/jop/article/view/1712.