M. FAISAL, R. The Application of the Mutagen Nitrous Acid to Improve the Free Living Nitrogen Fixation Ability of Azotobacter spp. Rafidain Journal of Science, [S. l.], v. 24, n. 1, p. 44–54, 2013. DOI: 10.33899/rjs.2013.67500. Disponível em: https://edusj.uomosul.edu.iq/index.php/rsci/article/view/47152. Acesso em: 10 sep. 2025.