Evaluation of Propolis Productivity of Local Honeybee Apis Mellifera syriaca by Using Modern Method and Studying The Factors Affecting Them in the Southern Region of Syria. مجلة للعلوم الزراعية. 2021;37(3). Accessed June 18, 2026. https://journal.damascusuniversity.edu.sy/index.php/agrj/article/view/1757