Abd Abdullah Gamal, Saddaa, and صداع. 2013. “Preparation of Poly (acro-Yellow Hydroxamic Acid) from the Polymer (methyl Acrylate) and Study Use It in the Water Purification from Heavy Metal Elements”. Journal of Education and Science (JES) 26 (5):314-24. https://doi.org/10.33899/edusj.2013.163109.