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Pakistan Journal of Biological Sciences 2 ( 3 ): 988 - 990 , 1999
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Pakistan Journal of Biological Sciences 4 ( 1 ): 112 - 116 , 2001
M. S. Chaudhry, G. Sarwar and A. Majeed
Pakistan Journal of Biological Sciences 9 ( 9 ): 1628 - 1638 , 2006