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Creator
- Statesman Journal 7
- Oregon Journal (Firm) 5
- Oregonian (Firm) 3
- East Oregonian Publishing Co. 2
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- The Daily Barometer 1
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- The Register-Guard 1
Topic
- Dams 7
- Flood control 7
- Rivers--Oregon 7
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- Lectures and lecturing 1
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Rights
- In Copyright 7
