L.U., Mahmoud, Apeh F. I, Shuaibu S., and Isheni Y. “Application of Gwange Natural Sand As Foundry Moulding Material”. American Scientific Research Journal for Engineering, Technology, and Sciences 20, no. 1 (June 6, 2016): 148–156. Accessed May 3, 2024. https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1415.