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Volume 46, No. 1, March 2009
Contents

Research Articles

Life Sciences

Purification of phosphdiesterase I from Cerastes vipera venom, biochemical and biological properties of the purified enzyme
Saad S. M. Al-Saleh, Sami Ullah Khan and Mohammad Ashraf

 







1

Impact of forest and non-forest villagers on Ukhia and Inani forest range under Cox’s Bazar (south) forest division, Bangladesh
Sayma Akhter, Md. Shawkat Islam Sohel, Md. Parvez Rana and Mohammed Alamgir

 

13

Levels of recent and targetted determinants of fertility in Pakistan
Jamal Abdul Nasir, Munir Akthar and M. H. Tahir

 

23

Diversity of freshwater Cyanophycota in the north-eastern areas of Pakistan
Sabeen Naz, A. Zarina, Masud-ul-Hasan and Mustafa Shameel

 

29

Physical Sciences

On the convergence of three-step iteration process with errors in the class of quasi-contractive operators
R.A. Rashwan, Arif Rafiq and A. A. Abdel Hakim



41

Thermal shocking of a thin lead zirconate titanate piezoelectric ceramics disc
Riffat A. Pasha and Muhammad Z. Khan


47

Corrigendum

53