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
I. I. Ibeawuchi, C. T. Tom, M. C. Ofoh and C. C. Opara
Pakistan Journal of Biological Sciences 7 ( 6 ): 963 - 965 , 2004