- Forests and forestry -- Northwest, Pacific[remove]35
- United States. Forest Service. Pacific Northwest Region20
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club20
- Forests and forestry -- Research -- Northwest, Pacific9
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)9
- Forestry research -- Northwest, Pacific2
- Forest management1
- Forest management -- Environmental aspects -- Northwest, Pacific1
- Habitat (Ecology)1
- Northern spotted owl -- Northwest, Pacific1
- Old growth forests -- Government policy -- Northwest, Pacific1
- Old growth forests -- Northwest, Pacific1
- Spotted owl -- Habitat -- Northwest, Pacific1
- Spotted owl -- Nests -- Northwest, Pacific1
- Starker lectures1
- Sustainable forestry -- Northwest, Pacific1
- Wildlife conservation -- Northwest, Pacific1