“The Effect of Pollution Rates on the Biological Oxygen Demand Model in Water Streams”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), vol. 54, no. 1, Jan. 2024, pp. 185-92, https://doi.org/10.55562/jrucs.v54i1.589.