Mutar, M. A. and Kmal, R. K. (2017) “Preparation of copolymer of acrylamide and acrylic acid and its application for slow release sodium nitrate fertilizer”, Al-Qadisiyah Journal of Pure Science, 17(4), pp. 71-83. Available at: https://journalsc.qu.edu.iq/index.php/JOPS/article/view/483 (Accessed: 2December2025).