Subject
- Fishing -- Oregon78
- Hunting -- Oregon78
- Wildlife management -- Oregon77
- 4-H clubs59
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley44
- Pesticides -- Application -- Oregon -- Willamette River Valley41
- Agricultural pests -- Control -- Congresses31
- Forests and forestry -- Northwest, Pacific27
- Spraying and dusting in agriculture -- Oregon18
- Fisheries -- Oregon15
- United States. Forest Service. Pacific Northwest Region15
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club15
- Game protection -- Oregon14
- Spraying and dusting in agriculture14
- Game and game-birds -- Oregon13
- Grapes -- Diseases and pests -- Control -- Oregon13
- Forests and forestry -- Oregon12
- Viticulture -- Oregon12
- Agriculture -- Oregon11
- Forests and forestry11