Volume 3, Issue 1, June 1978, Pages 18-28
El Sayed H. El-Konyaly; A. Abdel-Magid Hassan; Reda M. K. El-Dewieny
Volume 3, Issue 1, June 1978, Pages 29-39
A. Abdul-Magid Hassan; Reda M.K. El-Dewieny; El Sayed H. El-Konyaly