Subject
- Fisheries -- Oregon15
- Game and game-birds -- Oregon11
- Game protection -- Oregon11
- Industrial arts -- Study and teaching7
- Fish culture -- Oregon4
- Forests and forestry -- Northwest, Pacific4
- Forests and forestry -- Research -- Northwest, Pacific4
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)4
- Agriculture -- Oregon3
- Douglas fir3
- Fishes -- Oregon3
- Biology -- Study and teaching (Secondary)2
- Dairy cattle -- Feeding and feeds2
- Education -- Oregon2
- Educational counseling2
- Educational tests and measurements2
- Forage plants -- Oregon2
- Forest fires -- Prevention and control2
- Hobbies2
- Home economics -- Study and teaching2