N. G. Al-Zaidy, R., رغد, Ibrahim, N., نجوى, N. Al-Niemi, A. and عبد 2021. Determination of the efficiency of the type Sinorhizobium meliloti L the formation of root nodules on different Medicago sativa varieties. Journal of Education and Science (JES). 30, 3 (Aug. 2021), 133–149. DOI:https://doi.org/10.33899/edusj.2021.168643.