Lawal, J. A. . .; Olaremu, A. G. .; Odeyemi, O. T. .; Omeiza, F. S. .; Sanni, I. . COMPETITIVE ADSORPTION OF Fe2+, Pb2+, AND Zn2+ IONS FROM MULTI-METAL ION SOLUTION ON AMMONIUM OXALATE MODIFIED KAOLINITE CLAY . JCSN 2024, 49.