Pages 1-9
A.M. Alsalhy; M.M. Al-Wasfy; I.F.M. Badawy; F.M. Gouda; A.A. Shamroukh
Pages 10-17
O.A. Khodair; M.M.A. Abd El-Rahman
Pages 31-52
R.A. Ibrahim; M.T. EL-Mahdy; M.A.M. Taha; M.M. Shaaban
Pages 85-95
M.M. El-Akad; M.k. Rizkalla; R.A. Ibrahim