Ahmed Mohamed Ahmed Al-Doori, S. (2013) “Effect of Plant Densities on Growth, Yield Components and Quality of Some Sunflower Cultivars ( Helianthus annuus L.)”, College of Basic Education Research Journal, 12(2), pp. 765–776. Available at: https://stats.uomosul.edu.iq/index.php/berj/article/view/39607 (Accessed: 26 October 2025).