Nizami, M Sharif, and M Iqbal Chaudhry. “Investigations on Indigenous Fuller’s Earth and Its Evaluation After Acid Activation”. Biological Sciences - PJSIR 49, no. 4 (August 28, 2006): 242–245. Accessed July 22, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/1177.