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Browsing Environmental Science Center by Author "Nour%2C E. M. %5B%D8%A7%D9%84%D9%85%D8%AA%D9%88%D9%84%D9%8A %D8%A7%D9%84%D8%B3%D9%8A%D8%AF %D9%86%D9%88%D8%B1%5D"