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Creator
- Kolars, John F. 9
- Mitchell, William A. 1
Donor
- Naff, Thomas 9
Topic
- Irrigation 9
- Agriculture 4
- Climate 4
- Hydrology 4
- Water-power 4
- Watersheds 4
- Demography 3
- Groundwater 3
- Dams 2
- Persian Gulf 2
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Language
- English 9
Type
- Text 9