Subject
- Game and game-birds -- Oregon22
- Game protection -- Oregon20
- Fisheries -- Oregon15
- Forests and forestry -- Northwest, Pacific8
- Engineering -- Research -- Oregon5
- Lane County (Or.) -- History5
- Highway research -- Congresses4
- United States. Forest Service. Pacific Northwest Region4
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club4
- Agriculture3
- Agriculture -- Oregon3
- Burning of land3
- Ceanothus velutinus3
- Douglas fir3
- Fishery management -- Oregon -- Statistics3
- Fishes -- Physiology3
- Fishing -- Oregon -- Statistics3
- Forest ecology3
- Forests and forestry -- Research -- Northwest, Pacific3
- Oceanography -- Research3