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Topic
- Saline water conversion 16
- Irrigation 9
- Politics and government 9
- Technology 9
- Economics 7
- Agriculture 6
- Aquifers 6
- Resource allocation 6
- Groundwater 4
- Hydrology 4
- Water quality 4
- Dams 3
- Demography 3
- Droughts 3
- Water-supply 3
- Contamination of environment 2
- International regimes 2
- Precipitation (Meteorology) 2
- Sewage 2
- Water diversion 2
