Subject
- Fisheries -- Oregon185
- Game and game-birds -- Oregon183
- Game protection -- Oregon183
- 4-H clubs153
- Wildlife management -- Oregon56
- Agriculture -- Oregon53
- Douglas fir51
- Fishing -- Oregon46
- Herbicides46
- Hunting -- Oregon46
- Forests and forestry -- Northwest, Pacific40
- Forests and forestry -- Oregon35
- Soils -- Oregon35
- Forests and forestry -- Research -- Oregon34
- Engineering33
- Reforestation -- Oregon33
- Wheat33
- Cattle -- Feeding and feeds32
- Swine -- Feeding and feeds25
- Hatfield Marine Science Center23