Topic
- Drinking water 4
- Precipitation (Meteorology) 4
- Reservoirs 4
- Saline water conversion 4
- Salinity 4
- Aswan High Dam (Egypt) 3
- Bibliography 3
- Commerce 3
- Drainage 3
- Gross domestic product 3
- Human settlements 3
- International law 3
- Artificial groundwater recharge 2
- Contamination of environment 2
- Deserts 2
- Exports 2
- Gross national product 2
- Imports 2
- Meetings 2
- Occupied territories 2