Vijaya, Tiwari R. Role of spore-pollen species in demarcating the Permo-Triassic boundary in Raniganj Coalfield, West Bengal. JPS [Internet]. 1986 Dec. 31 [cited 2024 May 2];35((1-3):242-8. Available from: https://jpsonline.co.in/index.php/jop/article/view/1538