Kadhim, Zaki N. “Using of Isolated Hydroxyapatite from Sheep Bones to Remove Lead (II) from Aqueous Solution and Studying the Thermodynamics and Adsorption Isotherm”. Asian Journal of Applied Sciences 4, no. 1 (March 5, 2016). Accessed January 16, 2022. https://ajouronline.com/index.php/AJAS/article/view/3587.