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Abstract I am sincerely indebted to professor El- Sayed Shalaby Professor of Air and Soil Chemistry, Department of Environmental Studies, Institute of Graduate Studies and Research , Alexandria University, for planning this master report , his keen supervision, valuable discussions, encouragement and reviewing the manuscript. I would also like to express my great appreciation to Dr. Mohamed Abd- Elkerim , Associate professor of Environmental Economics , Department of Environmental Studies , Institute of Graduate Studies and Research Alexandria University, for his time and effort in supervision and for continuous help throughout writing of the manuscript. I would like to express my deepest thanks and appreciation to Dr. Fatma Abou Shouk, Head of Environmental Management Department , EEAA for her continuous support, encouragement. |