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A.Z. El-Bahrawy, M.A. El-Khateeb (Faculty of Science, Environmental Sciences Department, Al Jouf University, Kingdom of Saudi Arabia., M.M. Al-Enazi (Department of Medical Laboratory Sciences, Collage of Applied Medical Sciences, Salman bin Abdulaziz University, Kingdom of Saudi Arabia., National research Center, Water Pollution Control Department, Dokki, Cairo, Egypt.), Vice Rector of Graduate Studies & Scientific Research, Al Jouf University, Kingdom of Saudi Arabia.)
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