S. A. Al-Saffar, Raed, and Zahraa K. H. Al-Sawaf. 2012. “Estimation of Heterosis and Heritability in Bread Wheat (Triticum Aestivum L.)”. Rafidain Journal of Science 23 (6):27-38. https://doi.org/10.33899/rjs.2012.59603.