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Creator
- Food and Agriculture Organization of the United Nations 5
- Henderson, Robert W. (Robert Wesley), 1914-2006 4
- United Nations Development Programme 3
- Bot, Alexandra 2
- Dougrameji, Jamal S. 2
- Al-Muhandis, Majid H. 1
- Arar, Abdullah 1
- Associates for Middle East Research 1
- Ayoub, A. 1
- Babiker, Abdalla 1
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Topic
- Soils 86
- Agriculture 53
- Watersheds 42
- Irrigation 38
- Water quality 19
- Climate 18
- Groundwater 15
- Hydrology 14
- Precipitation (Meteorology) 13
- Salinity 12
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Language
- English 86
Publisher
- Food and Agriculture Organization of the United Nations 33
- United States. Joint Publications Research Service 5
- United Nations Development Programme 4
- Jāmiʻah al-Urdunīyah. Markaz al-Buḥūth wa-al-Dirāsāt al-Māʼīyah 2
- Pergamon Press (Oxford, England) 2
- Unesco 2
- United Nations 2
- Allerton Press 1
- American Society of Civil Engineers 1
- American University (Washington, D.C.) 1
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