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Topic
- Aquifers 28
- Groundwater 18
- Watersheds 14
- Irrigation 11
- Agriculture 7
- Economics 6
- Hydrology 6
- Politics and government 6
- Technology 5
- Water-supply 5
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Publisher
- United Nations 4
- Israel/Palestine Center for Research and Information 2
- Pergamon Press (Oxford, England) 2
- Unesco 2
- American Society of Civil Engineers 1
- European Mediterranean Commission of Water Planning 1
- France. Documentation française 1
- International Association of Hydrological Sciences 1
- International Association of Scientific Hydrology 1
- La Documentation française 1
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Collection
- The Middle East Water Collection 28