Subject
- Game and game-birds -- Oregon65
- Game protection -- Oregon65
- Fisheries -- Oregon52
- Wildlife management -- Oregon37
- Fishing -- Oregon32
- Hunting -- Oregon32
- Agricultural pests -- Control -- Congresses27
- Heat -- Transmission26
- Forests and forestry -- Northwest, Pacific24
- Fishery management -- Oregon -- Statistics21
- Fishing -- Oregon -- Statistics21
- Douglas fir20
- Fish-culture -- Oregon -- Statistics20
- Forests and forestry20
- United States. Forest Service. Pacific Northwest Region19
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club19
- Industrial arts -- Study and teaching18
- Oregon State University -- Curricula17
- Herbicides16
- Agricultural experiment stations -- Research -- Oregon -- Jackson County14