- Forests and forestry -- Northwest, Pacific[remove]31
- Forests and forestry -- Research -- Northwest, Pacific17
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)16
- United States. Forest Service. Pacific Northwest Region7
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club7
- Forestry research -- Northwest, Pacific2
- Starker lectures2
- Forest management1
- Forest management -- Environmental aspects -- Northwest, Pacific1
- Forest policy1
- Forests and forestry -- Multiple use1
- Habitat (Ecology)1
- Lumber trade -- United States1
- Northern spotted owl -- Northwest, Pacific1
- Old growth forests -- Government policy -- Northwest, Pacific1
- Old growth forests -- Northwest, Pacific1
- Pacific Northwest Forest Experiment Station (Portland, Or.)1
- Sustainable forestry -- Northwest, Pacific1
- Wildlife conservation -- Northwest, Pacific1