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Topic
- Peace 63
- Politics and government 48
- Economics 24
- Armed Forces 23
- International regimes 23
- Saline water conversion 9
- Agriculture 8
- Hydrology 8
- Technology 8
- Demography 7
- Finance 7
- Groundwater 7
- Negotiation 7
- Aquifers 6
- Human settlements 6
- Palestinian Arabs 5
- Resource allocation 5
- Water quality 5
- Watersheds 5
- Bureaucracy 4
