Subject
- Forests and forestry -- Northwest, Pacific[remove]13
- United States. Forest Service. Pacific Northwest Region12
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club12
- 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
- Wildlife conservation -- Northwest, Pacific1