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- Zionism 5
- Politics and government 4
- Agriculture 3
- Economics 2
- Human settlements 2
- Resource allocation 2
- Water diversion 2
- Aquifers 1
- Armed Forces 1
- Building 1
- Canals 1
- Climate 1
- Demography 1
- Great Britain 1
- Groundwater 1
- Hydrology 1
- Irrigation 1
- Occupied territories 1
- Recycling 1
- Riparian areas 1
