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Muhammad Akbar Khan, Abdul Ghaffar, Umar Farooq and Muhammad Akhtar
Journal of Applied Sciences 6 ( 1 ): 131 - 137 , 2006
Abdul Ghaffar, Muhammad Akbar Khan, Muhammad Akhtar, Muhammad Anwar Qureshi, Umar Farooq and M. Nazir
Journal of Applied Sciences 6 ( 1 ): 127 - 130 , 2006