“Using Statistical Methods to Detect and Predict the Causes of Pollution of the Tigris River”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 54, no. 1 (January 13, 2024): 47–57. Accessed April 23, 2026. https://jrucs.iq/index.php/JAUCS/article/view/575.