Khammas, K.M., Mehdi, N.Z. and Alwan, A.H. 2012. Improved selection medium and technique for isolation of Azospirillum irakense. Al Mustansiriyah Journal of Pharmaceutical Sciences. 11, 1 (Jun. 2012), 25–31. DOI:https://doi.org/10.32947/ajps.v11i1.235.