Volume 17, Issue 2, June 1992, Pages 24-41
Hafez M. El-Zayyat; Zuhair H. El-Isa; Adel A. El-Tayem; Bahjat A. Abdel-Fattah
Volume 17, Issue 1, March 1992, Pages 19-41
Ali Ibrahim El-Desouky Ibrahim; Nadia H. Hegazi; Mofreh Mohamed Salem Mohamed; Ola A. Zahran