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Topic
- Rivers--Oregon 151
- Dams 92
- Water--Pollution 53
- Salmon 36
- Lectures and lecturing 35
- Flood control 32
- Fishes--Conservation 31
- Izaak Walton League of America 16
- Inland water transportation 15
- Sewage disposal plants 14
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Work Type
- clippings (information artifacts) 151
- programs (documents) 7
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 94
- Columbia River >> Clatsop County >> Oregon >> United States 54
- Santiam River >> Marion County >> Oregon >> United States 21
- Portland >> Washington County >> Oregon >> United States 16
- McKenzie River >> Lane County >> Oregon >> United States 11
- Sweet Home >> Linn County >> Oregon >> United States 7
- Bonneville Dam >> Multnomah County >> Oregon >> United States 6
- Rogue River >> Curry County >> Oregon >> United States 6
- Alaska >> United States 5
- Grand Coulee Dam >> Okanogan County >> Washington >> United States 4
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Repository
- Oregon State University. Libraries 151