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Browsing Environmental Science Center by Author "Othman%2C Adel A. A. %5B%D8%B9%D8%A7%D8%AF%D9%84 %D8%B9%D9%84%D9%8A %D8%B9%D9%84%D9%8A %D8%B9%D8%AB%D9%85%D8%A7%D9%86%5D"