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Donor
- Naff, Thomas 65
Topic
- Agriculture 27
- Aswan High Dam (Egypt) 18
- Groundwater 14
- Water quality 14
- Politics and government 13
- Hydrology 12
- Irrigation 12
- Technology 11
- Watersheds 8
- Dams 7
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Region
- Egypt 65
- Sudan 13
- Ethiopia 6
- South Sudan 6
- Israel 2
- Iraq 1
- Palestine >> Middle East >> Earth 1
- Syria 1
Publisher
- Pergamon Press (Oxford, England) 5
- United States. Joint Publications Research Service 5
- Food and Agriculture Organization of the United Nations 4
- Egypt. Wizārat al-Rayy 3
- Middle East Institute (Washington, D.C.) 3
- United Nations 3
- United Nations. Economic Commission for Africa 3
- World Meteorological Organization 3
- American Society of Civil Engineers 2
- American University in Cairo 2
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Decade
- 1970-1979 65