Waleed Khalid, Marah, and Sami D. Salman. “Adsorption of Chromium Ions on Activated Carbon Produced from Cow Bones”. Iraqi Journal of Chemical and Petroleum Engineering 20, no. 2 (June 30, 2019): 23–32. Accessed May 3, 2024. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/547.