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Donor
- Naff, Thomas 188
Topic
- Irrigation 194
- Agriculture 103
- Groundwater 42
- Technology 39
- Politics and government 38
- Finance 31
- Hydrology 29
- Water quality 29
- Dams 26
- Drainage 24
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Rights
- In Copyright 194
Publisher
- United States. Joint Publications Research Service 26
- World Bank 6
- American University in Cairo 5
- United Nations Development Programme 5
- British Broadcasting Corporation 4
- Middle East Economic Digest Ltd. 4
- Sudan. Wizārat al-Iʻlām wa-al-Thaqāfah 4
- United Nations 4
- Food and Agriculture Organization of the United Nations 3
- International Commission on Irrigation and Drainage 3
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Institution
- Oregon State University 194
