Pages 18-38
Agidi Gbabo; Ndagi Baba; Akammaa Clement Wada; O. B. Aturu
Pages 40-56
Bazied D. Mohamed; Essam A. Amer; Mahmoud H. Ebid
Pages 94-111
El-Mahdy A. Teama; Ali A. Othman; Mostafa A. Farag; Mohamed F. Dahroug; Tawfik N. El-Kammash