Bhattacharya, Jayanta. “Can Ordinary Earth Be Considered As a Minor Mineral Without Any Qualification? Is Asking Royalty for Ordinary Earth Justified? (Part-1)”. Journal of Mines, Metals and Fuels 70, no. 5 (July 22, 2022): 228–232. Accessed May 8, 2024. https://informaticsjournals.com/index.php/jmmf/article/view/30335.