1.
Bhardwaj D, Venkatachala B. Microfloristic Evidence on the boundary between the Carboniferous and the Permian systems in Pfalz (W. Gwemany). JPS [Internet]. 1957 Dec. 31 [cited 2024 Oct. 2];6((1-2):1-11. Available from: https://jpsonline.co.in/index.php/jop/article/view/546