- Forests and forestry -- Northwest, Pacific[remove]59
- United States. Forest Service. Pacific Northwest Region29
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club29
- Forests and forestry -- Research -- Northwest, Pacific17
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)16
- Starker lectures4
- Forest management2
- Forestry research -- Northwest, Pacific2
- Forests and forestry -- Multiple use2
- Carbon cycle (Biogeochemistry) -- Northwest, Pacific1
- Forest ecology -- Northwest, Pacific1
- Forest management -- Environmental aspects -- Northwest, Pacific1
- Forest policy1
- Forest policy -- Northwest, Pacific1
- Forest products industry -- Northwest, Pacific1
- Forestry law and legislation1
- Habitat (Ecology)1
- Lumber trade -- United States1
- Northern spotted owl -- Northwest, Pacific1
- Old growth forests -- Government policy -- Northwest, Pacific1