Alkhalidy, Akram A. A., Ali F. Nasir, and Majed S. Hmoud. 2022. “Studying the Effect of a New Tillage System on Some Yield Attributes of Sunflower Crop (Helianthus Annuus. L)”. International Journal of Health Sciences 6 (S1):8217-28. https://doi.org/10.53730/ijhs.v6nS1.6902.