Al-Mayah, W.T. and Rabee, A.M. (2018) “Application of Overall Index of Pollution (OIP) for the Evaluating of the Water Quality in Al-Gharraf River southern of Iraq”, Iraqi Journal of Science, 59(2A), pp. 660–669. Available at: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/319 (Accessed: 14 December 2025).