Subject
- Fisheries -- Economic aspects -- Congresses140
- Sustainable fisheries -- Congresses90
- Game protection -- Oregon57
- Game and game-birds -- Oregon56
- Fisheries -- Oregon54
- 4-H clubs53
- Sustainable Fisheries -- Congresses50
- Douglas fir45
- Industrial arts -- Study and teaching44
- Heat -- Transmission39
- Forests and forestry -- Northwest, Pacific37
- U.S. International Biological Program. Coniferous Forest Biome34
- Home economics -- Study and teaching29
- Forests and forestry -- Oregon28
- Forests and forestry -- Research -- Oregon28
- Wildlife management -- Oregon28
- Fishing -- Oregon25
- Wheat25
- Educational counseling24
- Hunting -- Oregon24