“Peace in the political posture during the first half of the eighties «Subjects- Expressions tools- Sigh Language»”, مجلة العلوم الهندسية, vol. 33, no. 1, Jun. 2021, Accessed: Jun. 18, 2026. [Online]. Available: https://journal.damascusuniversity.edu.sy/index.php/engj/article/view/152