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Donor
- Naff, Thomas 95
Topic
- Watersheds 95
- Groundwater 37
- Agriculture 33
- Irrigation 31
- Soils 25
- Precipitation (Meteorology) 24
- Hydrology 20
- Water quality 17
- Aquifers 14
- Climate 14
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Publisher
- Food and Agriculture Organization of the United Nations 26
- United Nations Development Programme 6
- United Nations 5
- Pergamon Press (Oxford, England) 4
- Natural resources/water series 3
- Orta Doğu Teknik Üniversitesi (Ankara, Turkey) 3
- Unesco 3
- United States. Government Printing Office 3
- Academic Press 2
- Associates for Middle East Research 2
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Decade
- 1970-1979 95
