Subject
- Forests and forestry -- Research -- Oregon57
- Forests and forestry -- Northwest, Pacific54
- Reforestation -- Oregon47
- Forests and forestry -- Oregon35
- Game and game-birds -- Oregon35
- Game protection -- Oregon35
- Wildlife management -- Oregon29
- Agricultural pests -- Control -- Congresses26
- Oregon State University. College of Forestry25
- Fishing -- Oregon23
- Hunting -- Oregon23
- Forests and forestry -- Research -- Northwest, Pacific21
- Report (United States. Forest Service. Northern Region. Insect and Disease Management)21
- United States. Forest Service. Pacific Northwest Region21
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club21
- Fisheries -- Oregon20
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)19
- Catalogs, Publishers' -- Oregon16
- College publications -- Oregon16
- Douglas fir16