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Browsing by Author "Omran%2C Mohamed A. A. %5B%D9%85%D8%AD%D9%85%D8%AF %D8%B9%D9%84%D8%A7%D8%A1 %D8%B9%D8%A8%D8%AF%D8%A7%D9%84%D9%84%D9%87 %D8%B9%D9%85%D8%B1%D8%A7%D9%86%5D"