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Pakistan Journal of Biological Sciences 3 ( 1 ): 91 - 94 , 2000
Khalid P. Akhtar and S. S. Alam
Pakistan Journal of Biological Sciences 3 ( 7 ): 1119 - 1122 , 2000
Khalid P. Akhtar and S. S. Alam
Pakistan Journal of Biological Sciences 5 ( 2 ): 246 - 250 , 2002