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Creator
- Food and Agriculture Organization of the United Nations 3
- Henderson, Robert W. (Robert Wesley), 1914-2006 2
- Nyrop, Richard F. 2
- United Nations Development Programme 2
- Al-Hadithi, Adai Hardan 1
- Cooley, John K., 1927-2008 1
- Du Bois, Victor D. 1
- El-Dujaili, A. 1
- El-Tom, Mahdi Amin 1
- Gat, Joel, 1926- 1
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Topic
- Climate 21
- Watersheds 10
- Agriculture 9
- Irrigation 7
- Precipitation (Meteorology) 7
- Soils 6
- Water-supply 4
- Demography 3
- Economics 3
- Groundwater 3
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Language
- English 21
Publisher
- Food and Agriculture Organization of the United Nations 4
- American University (Washington, D.C.) 2
- Pergamon Press (Oxford, England) 2
- American Universities Field Staff 1
- Christian Science Publishing Society 1
- Kollek and Sons Ltd. 1
- Middle East and North African Studies Press 1
- Systems Research Corporation 1
- United Nations Development Programme 1
- United States. Government Printing Office 1
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Decade
- 1970-1979 21