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Topic
- Economics 7
- Agriculture 5
- Irrigation 5
- Dams 3
- Climate 2
- Reclamation of land 2
- Watersheds 2
- Commerce 1
- Diyala River (Iran and Iraq) 1
- Drainage 1
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Water Basin
- Tigris River >> Basra Governorate >> Iraq 7
- Euphrates River >> Basra Governorate >> Iraq 6
Decade
- 1970-1979 7