Subject
- Fisheries -- Oregon177
- Game and game-birds -- Oregon174
- Game protection -- Oregon174
- 4-H clubs153
- Agriculture -- Oregon53
- Douglas fir52
- Wildlife management -- Oregon51
- Fishing -- Oregon47
- Hunting -- Oregon47
- Forests and forestry -- Northwest, Pacific39
- Herbicides39
- Forests and forestry -- Oregon36
- Forests and forestry -- Research -- Oregon35
- Cattle -- Feeding and feeds34
- Engineering33
- Soils -- Oregon33
- Reforestation -- Oregon31
- Wheat27
- Swine -- Feeding and feeds24
- Hatfield Marine Science Center22