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Creator
- Egypt. Wizārat al-Rayy 11
Topic
- Agriculture 4
- Groundwater 4
- Finance 3
- Hydrology 3
- Industries 3
- Irrigation 3
- Sewage 3
- Water quality 3
- Aquifers 2
- Barrages 2
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Region
- Egypt 11
- Sudan 2
- Ethiopia 1
- South Sudan 1
Decade
- 1980-1989 11