Limit your search
Topic
- Politics and government 44
- Irrigation 26
- Agriculture 21
- Hydrology 20
- Economics 18
- Groundwater 18
- International regimes 16
- Dams 13
- Watersheds 12
- Demography 10
- more »
Language
- English 94
Publisher
- United States. Joint Publications Research Service 9
- United Nations 6
- British Broadcasting Corporation 4
- Pergamon Press (Oxford, England) 4
- Great Britain. His Majesty's Stationery Office 3
- United States. Foreign Broadcast Information Service 3
- United States. Government Printing Office 2
- Academic Press 1
- American Society of Civil Engineers 1
- American-Arab Affairs Council 1
- more »