Hasan, MK, DA Begum, and MF Islam. “Leaching of Sodium Sulphide Roasted Ilmenite Sand”. Bangladesh Journal of Scientific and Industrial Research 42, no. 4 (March 25, 2008): 367–376. Accessed December 21, 2024. https://banglajol.info/index.php/BJSIR/article/view/746.