Gutti, Babagana, Habu Mohammed Iyodo, and Umar Abdullahi Isah. “Biosorption of Lead (II) Ion from Aqueous Solution Using Dum Palm Kernel”. International Journal of Environment 4, no. 2 (June 3, 2015): 68–75. Accessed April 25, 2024. https://www.nepjol.info/index.php/IJE/article/view/12625.