Pages 1-7
هشام عبد النعيم القرياتي; محمد عبدالله قاسم; osama abdel hamid helaly
Pages 9-14
Mahmoud Khalifa Elsaiedy; mohamed abdullah Quassem; Osama Abd elhameed helaly
Pages 15-25
Mohamed El gohary; mohammed fawzy metwally; Tamer E Shokry
Pages 27-32
Abdelrahman Karam eldain; osama helaly; Diab Alhadad
Pages 41-47
sara mohsen ahmed; maged zohdy; omar foad; Ghada Abdelfattah