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Donor
- Naff, Thomas 43
Topic
- Groundwater 43
- Watersheds 43
- Aquifers 22
- Hydrology 15
- Irrigation 12
- Precipitation (Meteorology) 12
- Water quality 10
- Agriculture 9
- Hydrogeology 8
- Wells 6
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Publisher
- Associates for Middle East Research 5
- United Nations 5
- Unesco 4
- United States. Joint Publications Research Service 4
- World Bank 4
- Jāmiʻah al-Urdunīyah 3
- United States. Army. Corps of Engineers 3
- United Nations. Department of Technical Cooperation for Development 2
- American Enterprise Institute for Public Policy Research 1
- European Mediterranean Commission of Water Planning 1
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Decade
- 1980-1989 43