“some Chemical effects on growth of azotobacter chroococcum wild-type and it’s mutant-44”, Baghdad Sci.J, vol. 2, no. 4, pp. 627–633, Mar. 2021, Accessed: May 07, 2024. [Online]. Available: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/660