ديب ع. ., صهيوني ف. ., & محمد ناصر ع. . (2021). Effect of spray by Urea and Zinc sulphat on growth and production of Plum cultivar " Jubileum" . Tishreen University Journal -Biological Sciences Series, 43(2). Retrieved from https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/10583