Abdul Faheem Khan, Anwar Manzoor Rana, Abdus Salam, M. Iqbal Ansari and Nazar Hussain
Journal of Applied Sciences 1 ( 3 ): 239 - 243 , 2001
Anwar Manzoor Rana, Abdul Faheem Khan and Abdus Salam
Journal of Applied Sciences 1 ( 3 ): 244 - 246 , 2001