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Donor
- Naff, Thomas 8
Topic
- Groundwater 3
- Watersheds 3
- Agriculture 2
- Deltas 2
- Hydrology 2
- Irrigation 2
- Precipitation (Meteorology) 2
- Soils 2
- Water quality 2
- Aquifers 1
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Repository
- Oregon State University. Libraries 8
Decade
- 1970-1979 8