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Creator
- United Nations 23
- United Nations. Economic and Social Commission for Western Asia 8
- United Nations. Department of Technical Cooperation for Development 3
- Egypt. Wizārat al-Rayy 2
- El-Sawaby, M. S. 2
- Food and Agriculture Organization of the United Nations 2
- Zikri, B. S. 2
- Al-Kawaz, Ghazi Majeed 1
- Arlosoroff, Saul, 1930- 1
- Azar, N. 1
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Topic
- Irrigation 26
- Agriculture 21
- Groundwater 18
- Hydrology 16
- Politics and government 15
- Water quality 14
- Water-supply 14
- Watersheds 14
- Aquifers 12
- Economics 9
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Publisher
- United Nations 77
