Naheed Akhtar Sayal, Obaid Ullah Sayal and Shakeel Ahmad Jatoi
Pakistan Journal of Biological Sciences 2 ( 3 ): 894 - 896 , 1999
Naheed Akhtar Sayal, Obaid Ullah Sayal and Shakeel Ahmad Jatoi
Pakistan Journal of Biological Sciences 2 ( 3 ): 900 - 902 , 1999