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Creator
- Abu Bakr, Yahya 2
- Kolars, John F. 1
Topic
- Groundwater 2
- Precipitation (Meteorology) 2
- Water-supply 2
- Agriculture 1
- Arabian Peninsula 1
- Climate 1
- Economics 1
- Hydrology 1
- Irrigation 1
- Technology 1
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Institution
- Oregon State University 2