Surange K, Maheshwari HK. Studies in the Glossopteris flora of India - 11. Some observations on Vertebraria from the Lower Gondwana of India. JPS [Internet]. 1960 Dec. 31 [cited 2024 May 16];9((1-2):61-7. Available from: https://jpsonline.co.in/index.php/jop/article/view/599