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Topic
- Agriculture 4
- Dams 3
- Groundwater 3
- Hydrology 3
- Irrigation 3
- Watersheds 3
- Drainage 2
- Ecology 2
- Groundwater recharge 2
- Silt 2
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Region
- Egypt 8
- Sudan 6
- South Sudan 1
Water Basin
- River Nile >> Sudan 10
Publisher
- Pergamon Press (Oxford, England) 10