Subject
- Fisheries -- Oregon49
- Game and game-birds -- Oregon43
- Game protection -- Oregon43
- Engineering15
- Industrial arts -- Study and teaching9
- Fish culture -- Oregon8
- Forests and forestry -- Northwest, Pacific8
- Wood poles -- Preservation8
- Fences -- Deterioration7
- Fences -- Preservation7
- Wood poles -- Deterioration7
- Home economics6
- Visual education6
- Forests and forestry -- Research -- Northwest, Pacific5
- Home economics -- Study and teaching5
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)5
- Vocational guidance5
- Wildlife conservation -- Oregon5
- Wildlife management -- Oregon5
- Douglas fir4