2021. Layout of the Administrative Offices at the College of Adminstration and Economics - University Of Diyala Using Matrix Relations. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ). 40, 2 (Oct. 2021), 141–166. DOI:https://doi.org/10.55562/jrucs.v40i2.197.