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Journal of Plant Sciences 2 ( 2 ): 238 - 242 , 2007
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Journal of Plant Sciences 2 ( 4 ): 374 - 386 , 2007
I. I. Ibeawuchi, J. C. Obiefuna, M. C. Ofoh, G. O. Ihejirika, C. T. Tom, E. U. Onweremadu and C. C. Opara
Pakistan Journal of Biological Sciences 8 ( 2 ): 215 - 219 , 2005
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Pakistan Journal of Biological Sciences 7 ( 6 ): 963 - 965 , 2004