“Estimating the Multiple Regression Model Using the Bootstrap Method to Study the Effect of Environmental Wastes on the Waters of the Euphrates River”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), vol. 54, no. 1, Jan. 2024, pp. 107-24, https://doi.org/10.55562/jrucs.v54i1.581.