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- Izaak Walton League of America 45
- Rivers--Oregon 18
- Water--Pollution 14
- Lectures and lecturing 10
- Conservation of natural resources 6
- Dams 6
- Fishes--Conservation 3
- Forests and forestry 3
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 11
- Willamette River >> Multnomah County >> Oregon >> United States 5
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- Coos Bay >> Coos County >> Oregon >> United States 2
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- Bonneville Dam >> Multnomah County >> Oregon >> United States 1
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Collection
- OSU Special Collections & Archives Research Center 45
- Reuniting Finley and Bohlman 45
