Subject
- Forest ecology -- Oregon2
- Forest management -- Oregon2
- Gifford Pinchot National Forest (Wash.)2
- Mount Hood National Forest (Or.)2
- Abies grandis1
- Abies grandis -- Blue Mountains (Or. and Wash.)1
- Abies grandis -- Oregon -- Ochoco Mountains1
- Blue Mountains (Or. and Wash.)1
- Fir -- Washington (State) -- Gifford Pinchot National Forest1
- Forest ecology -- Washington (State) -- Gifford Pinchot National Forest1
- Forest management -- Washington (State)1
- Forest management -- Washington (State) -- Gifford Pinchot National Forest1
- Forest plants -- Oregon1
- Fremont National Forest (Or.)1
- Mountain hemlock -- Oregon1
- Mountain hemlock -- Washington (State) -- Gifford Pinchot National Forest1
- Mountain roads -- Oregon1
- Ochoco Mountains (Or.)1
- Plant communities -- Oregon1
- Plant communities -- Washington (State) -- Gifford Pinchot National Forest1