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- Reclamation of land 15
- Agriculture 13
- Bureaucracy 9
- Irrigation 6
- Finance 4
- Demography 3
- Thawrah (Syria) 3
- Dams 2
- Economics 2
- Industries 2
- Khabur River (Turkey and Syria) 2
- Water--Storage 2
- Water-supply 2
- Agriculture and state 1
- Citrus 1
- Climate 1
- Deserts 1
- Economic development 1
- Fertility 1
- International regimes 1