some Chemical effects on growth of azotobacter chroococcum wild-type and it’s mutant-44. Baghdad Science Journal, Iraq, Baghdad, v. 2, n. 4, p. 627–633, 2021. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/660.. Acesso em: 7 may. 2024.