Kabir, Sohail. “Origin of Opal-CT in Lower Eocene Tallahatta Formation, Mississippi, USA and Pleistocene Barind Clay Formation in Bangladesh: A Comparative Study: Origin of Opal-CT”. Biological Sciences - PJSIR 51, no. 2 (February 25, 2008): 61–64. Accessed May 4, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/620.