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Topic
- Aquifers 47
- Economics 29
- Demography 25
- Water consumption 21
- Recycling 19
- Water reuse 18
- Politics and government 16
- Groundwater 13
- Agriculture 11
- Resource allocation 10
- Water quality 7
- Hydrology 6
- Irrigation 5
- Water-supply 5
- Wells 5
- West Bank 5
- Palestinian Arabs 4
- Population 4
- Sewage 4
- Water diversion 4
