“A NEW CHITOSAN BIOPOLYMER DERIVATIVE FOR THE REMOVAL OF COPPER (II) AND LEAD (II) FROM AQUEOUS SOLUTIONS: SYNTHESIS, CHARACTERIZATION AND ADSORPTION STUDIES”. Jurnal Teknologi 79, no. 6 (August 28, 2017). Accessed July 23, 2024. https://journals.utm.my/jurnalteknologi/article/view/10534.