“PRELIMINARY INVESTIGATION ON THE USE OF MORINGA OLEIFERA FOR THE PURIFICATION OF LEAD POLLUTED WASTEWATER”, NIJOTECH, vol. 38, no. 1, pp. 253–257, Dec. 2018, Accessed: Jun. 04, 2026. [Online]. Available: https://mail.nijotech.com/index.php/nijotech/article/view/1937