Subject
- Fisheries -- Economic aspects4
- Fishing boats -- Economic aspects4
- Douglas fir -- Congresses2
- Forest management -- Congresses2
- Western hemlock -- Congresses2
- Aged -- Transportation1
- Earthquakes -- Oregon -- Thief Valley Reservoir Region1
- Fisheries -- Oregon1
- Game and game-birds -- Oregon1
- Game protection -- Oregon1
- Geology -- Oregon -- Nehalem River Watershed1
- Geology, Stratigraphic1
- Human beings -- Effect of environment on -- Study and teaching1
- Oysters -- Mortality -- Oregon1
- Steelhead (Fish) -- Oregon -- Willamette River1
- Water resources development1