زعاف صباح, and Djenidi Rouag Abla. “The Importance Of Ergonomics Applications In Multigrade Classrooms’ Space”. Wisdom Journal For Studies & Research 4, no. 02 (April 15, 2024): 238–246. Accessed July 3, 2024. https://uojawjournals.education/index.php/jwrs/article/view/239.