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- Palestinian Arabs 16
- Politics and government 14
- Aquifers 6
- Demography 3
- Water quality 3
- Water-supply 3
- Economics 2
- Hydrology 2
- Irrigation 2
- Peace 2
- Water-power 2
- Watersheds 2
- Agriculture 1
- Building 1
- Bureaucracy 1
- Canals 1
- Contamination of environment 1
- Dams 1
- Droughts 1
- Emigration and immigration 1
