Effect of spraying with aspirin (acetylsalicylic acid) on some morphological characters of two sunflower cultivars Helianthus annuus L. subjected to drought stress. cbej [Internet]. 2022 Dec. 21 [cited 2024 Jul. 18];20(84):31-55. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8258