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Pakistan Journal of Biological Sciences 3 ( 3 ): 459 - 462 , 2000
M. S. Sharar, M. Ayub, M. Adil Choudhry, M.A. Rana and M.M.Z. Amin
Pakistan Journal of Biological Sciences 2 ( 4 ): 1385 - 1386 , 1999