K.W S, P.M D, M I, I NI, O. N. M. Development and characterization of catalyst materials from magnetic sand, Crotalaria pallida and kaolin. IJAC [Internet]. 2021 Nov. 19 [cited 2024 May 4];9(2):188-91. Available from: https://www.sciencepubco.com/index.php/IJAC/article/view/31812