Taherkhani, Mahdi, Mirhadi, Gorban, Mirhadi, Mohammad Javad, Alimohammadi, Rahim (2007). Evaluation of nitrogen fixation ability of common bean (Phaseolus vulgaris L.) cultivars with three types of inoculants which contain different strains of Rhizobium phaseoli. *Agroecology Journal*, 3(2), 79-88.