root, root. “The Impact of Lean Management on the Quality of Educational Service (Analytical Research for the Opinions of Professors and Graduate Students in the College of Physical Education and Sports Sciences - University of Karbala)”. Warith Scientific Journal 5, no. 13 (March 30, 2023): 242-260. Accessed April 29, 2024. http://wsj.uowa.edu.iq/index.php/warith/article/view/108.