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Shamim Iftikhar, Fauqia Fahmeed, Iftikhar Ahmad and Abdul Hameed
Journal of Biological Sciences 2 ( 7 ): 441 - 443 , 2002
Shamim Iftikhar, Iftikhar Ahmad and Atiq-ur-Rehman Rattu
Pakistan Journal of Biological Sciences 3 ( 5 ): 848 - 849 , 2000