Volume 14, Issue 2, December 1989, Pages 52-65
A. H. Abd El-Reheem; M. M. Kamal
Volume 12, Issue 2, December 1987, Pages 40-49
M. M. Kamal; A. H.A. Abdel-Reheem
Volume 12, Issue 1, June 1987, Pages 21-36
A. Abdel-Reheem; M. M. Kamal; Adel Mohamed Ali El-Hadidy