Subject
- Forests and forestry -- Research -- Oregon7
- Reforestation -- Oregon7
- Douglas fir -- Northwest, Pacific2
- Forests and forestry -- Northwest, Pacific2
- Oregon Agricultural College -- Alumni and alumnae -- Directories2
- Oregon State Agricultural College2
- Railroad ties2
- United States. Forest Service -- History2
- Agricultural conservation -- Bibliography1
- Agricultural ecology -- Bibliography1
- Biodiversity1
- Biomass energy -- Economic aspects -- Oregon1
- Biomass energy -- Environmental aspects -- Oregon1
- Blister rust -- Control -- United States1
- Brown trout -- Oregon -- Deschutes River1
- Chinook salmon1
- Chinook salmon -- Habitat1
- Chinook salmon fisheries -- Oregon1
- Clark, Ava Milam, 1884-19761
- Commons, John R. (John Rogers), 1862-19451