Pages 11-26
Mohamed Mahmoud Mostafa Awad; El-Sayed R. Negeed; A. H. Mariy; Mohamed Mahmoud Mahgoub
Pages 27-37
Mohamed Mahmoud Moustafa Awad; S. M. Abd El-Samad; R. E. Gad; E. L. Asfour
Pages 38-59
A. E. Kabeel