Subject
- Wildlife management -- Oregon56
- Fishing -- Oregon51
- Hunting -- Oregon51
- Forests and forestry -- Northwest, Pacific30
- United States. Forest Service. Pacific Northwest Region23
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club23
- Forests and forestry -- Oregon16
- Oceanography -- Research16
- Mineral industries -- Oregon15
- Douglas fir14
- Oregon State University. College of Forestry14
- Natural gas -- Prospecting -- Oregon13
- Petroleum -- Prospecting -- Oregon13
- Adhesive joints -- Testing11
- Industrial arts -- Study and teaching11
- Lane County (Or.) -- History11
- Bark10
- Geothermal resources -- Oregon10
- Oregon State Agricultural College10
- Chemical reactions9