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. Pakistan Journal of Scientific & Industrial Research. 2008;51(2):61-64. Accessed March 10, 2026. https://v2.pjsir.org/index.php/biological-sciences/article/view/620