Subject
- Douglas fir -- Pruning3
- Douglas fir -- Biodegradation -- Oregon -- McDonald Forest2
- Douglas fir -- Diseases and pests -- Cultural control2
- Fomes pini -- Cultural control2
- Forest fires -- Oregon -- Prevention and control2
- Forest fires -- Prevention and control2
- Slash (Logging) -- Biodegradation -- Oregon -- McDonald Forest2
- Abandoned farms -- Oregon -- Lincoln County1
- American beaver -- Oregon1
- Animals -- Effect of fires on1
- Aplodontia1
- Biology -- Mathematical models1
- Bridges, Truss -- Design and construction1
- Communication in forestry1
- Communication in forestry -- United States1
- Elections -- United States1
- Elk -- Yellowstone National Park1
- Emergency Cooperative Fire Fighting Control Program (U.S.)1
- Empathy1
- Fish-culture1