Subject
- Game and game-birds -- Oregon126
- Game protection -- Oregon125
- Fisheries -- Oregon119
- Forests and forestry -- Northwest, Pacific44
- Wildlife management -- Oregon42
- Fishing -- Oregon29
- Forests and forestry -- Oregon29
- Hunting -- Oregon29
- United States. Forest Service. Pacific Northwest Region22
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club22
- Oregon State University. College of Forestry20
- Columbia Basin Agricultural Research Center -- Periodicals19
- 4-H clubs17
- Fishery management -- Oregon -- Statistics17
- Fishing -- Oregon -- Statistics17
- Forests and forestry -- Research -- Northwest, Pacific17
- Agricultural pests -- Control -- Congresses16
- Fish culture -- Oregon16
- Fish-culture -- Oregon -- Statistics16
- Agriculture -- Research -- Columbia River Watershed15