SPECTROSCOPIC AND CHEMICAL EVALUATION OF CLAY MINERALS AND THEIR SUITABILITY FOR THE MANUFACTURING OF ORGANIC CLAY, MEDICINAL CLAY AND PILLARED CLAY. Pakistan Journal of Scientific & Industrial Research. 2004;47(6):407-416. Accessed March 10, 2026. https://v2.pjsir.org/index.php/biological-sciences/article/view/1561