“Evaluation of Poly Acrylic Acid(PAA) Hydrogel Beads As Adsorbent for The Removal of Lead(II)ion from Water”. Al-Nahrain Journal of Science 16, no. 3 (September 1, 2013): 30–39. Accessed May 5, 2024. https://anjs.edu.iq/index.php/anjs/article/view/573.