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Topic
- Hydrology 4
- Aswan High Dam (Egypt) 2
- Water-power 2
- Canals 1
- Climate 1
- Dams 1
- Drainage 1
- Droughts 1
- Economics 1
- Filters and filtration 1
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Water Basin
- River Nile >> Sudan 4
Publisher
- United States. Joint Publications Research Service 4