Pages 557-568
Farag Saad Farag; Khalil Ibrahemi; M Abu- Okail; W Khairaldien; Ibrahim M Hassab Allah
Pages 577-589
Omar Emad Ahmed; Mohamed Emam; M. A. Abdelrahman; Ahmed A.A. Attia
Pages 590-611
Mahmoud Nasr Al-Qamash; Said M. A. Ibrahim; Mohamed R. Taha