Pages 21-28
Fathia Salem; Mahmoud M. Fawaz; Mostafa A. Elkeblawy; Samy Bassiouny
Pages 37-45
Fatheya Salem; Mahmoud M. Fawaz; Ehab M. Essa
Pages 47-57
Fathia Radwan Salem; mourad mousa; Amira Taha Ahmed