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Donor
- Naff, Thomas 2
Topic
- Dams 2
- Watersheds 2
- Agriculture 1
- Contamination of environment 1
- Drainage 1
- Ecology 1
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- Hydrology 1
- Irrigation 1
- Silt 1
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Region
- Sudan 2
- Egypt 1
- South Sudan 1
Publisher
- Pergamon Press (Oxford, England) 2
Repository
- Oregon State University. Libraries 2