Hassani Sultan, Raad, and رعد. “A Study on Aromatic Amino Acid Auxotrophs of Rhizobium Leguminosarum Biovar Trifolii”. Journal of Education and Science (JES) 22, no. 3 (September 1, 2009): 19–29. Accessed August 4, 2025. https://rjps.uomosul.edu.iq/index.php/edusj/article/view/18204.