Hussein, Ihsan A., and Salwa A. Ganim. 2017. “Genetic Variation Between Wild Type and Auxotrophic Mutant Isolates of Sinorhizobium Meliloti by Using RAPDPCR Technique”. Ibn AL-Haitham Journal For Pure and Applied Sciences 27 (3):118-30. https://jih.uobaghdad.edu.iq/index.php/j/article/view/270.