Subject
- Fisheries -- Oregon40
- Game and game-birds -- Oregon37
- Game protection -- Oregon37
- 4-H clubs36
- Engineering20
- Douglas fir8
- Wood poles -- Preservation8
- Fences -- Deterioration7
- Fences -- Preservation7
- Industrial arts -- Study and teaching7
- Wood poles -- Deterioration7
- Dairy cattle -- Feeding and feeds5
- Agriculture -- Oregon4
- Fish culture -- Oregon4
- Forests and forestry -- Northwest, Pacific4
- Fruit -- Drying4
- Home economics -- Study and teaching4
- Canning and preserving3
- Electric heating3
- Forest fires -- Prevention and control3