Abdullah عصمت عمر, and Muhammed إيمان نجم الدين. “Effect of Nutrition of Urea, Biofertilizer Cerialien and Spraying by Macro Elements on the Morphological and Physiological Characteristics of Sunflower Plant. Helianthus Annuus L. Cv. Sakha53”. University of Aden Journal of Natural and Applied Sciences 26, no. 2 (October 31, 2022): 115–130. Accessed April 19, 2024. https://uajnas.adenuniv.com/index.php/uajnas/article/view/351.