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Topic
- Rivers 23
- Santiam River (Or.) 8
- Canneries--Waste disposal 3
- Water--Pollution 3
- Willamette River (Or.) 3
- Erosion 1
- Forests and forestry 1
- Lakes 1
- Mountains 1
- Snow 1
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License
- Creative Commons: Attribution-NoDerivatives 4.0 International 23
Format
- image/tiff 23
Decade
- 1960-1969 23