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S. M. Nurul Amin and M. Zafar
Journal of Biological Sciences 4 ( 3 ): 342 - 344 , 2004
Md. Muhibbullah, S. M. Nurul Amin and A. T. Chowdhury
Journal of Biological Sciences 5 ( 3 ): 354 - 357 , 2005