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Rahmani, A. , Maleki, A. , Mirzaeiheydari, M. , Naseri, R.. "Effect of Plant Growth Promoting Rhizobacteria (PGPR) and Planting Pattern on Yield and Its Components of Rice (Oryza sativa L.) in Ilam Province, Iran". World Academy of Science, Engineering and Technology, Open Science Index 92, International Journal of Agricultural and Biosystems Engineering, (2014), 8(8), 912 - 918.