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- Hydrology 12
- Politics and government 6
- Groundwater 4
- Agriculture 3
- Demography 3
- Population 3
- Wadis 3
- Water quality 3
- Yarmuk River 3
- Economics 2
- Irrigation 2
- Precipitation (Meteorology) 2
- Aquifers 1
- Canals 1
- Contamination of environment 1
- Dams 1
- Health 1
- Industries 1
- Negotiation 1
- Perimeters (Boundaries) 1
