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Topic
- Irrigation 8
- Agriculture 5
- Dams 4
- Economics 3
- Flood control 2
- King Abdullah Canal (Jordan) 2
- Precipitation (Meteorology) 2
- Rivers 2
- Watersheds 2
- Arid regions 1
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Publisher
- Middle East Institute (Washington, D.C.) 8
Institution
- Oregon State University 8