Subject
- Gifford Pinchot National Forest (Wash.)4
- Blue Mountains (Or. and Wash.)2
- Fir -- Washington (State) -- Gifford Pinchot National Forest2
- Forest ecology -- Washington (State) -- Gifford Pinchot National Forest2
- Forest management -- Washington (State) -- Gifford Pinchot National Forest2
- Forests and forestry -- Washington (State)2
- Mount Hood National Forest (Or.)2
- Prescribed burning -- Oregon2
- Red alder2
- Abies grandis -- Blue Mountains (Or. and Wash.)1
- Abies grandis -- Oregon -- Ochoco Mountains1
- Animal-plant relationships -- Blue Mountains (Or. and Wash.)1
- Applegate River Watershed (Or.)1
- Bark beetles -- Control -- Oregon -- Pringle Falls Experimental Forest.1
- Bats -- Northwest, Pacific1
- Bighorn sheep -- Oregon -- Habitat1
- Birds -- Oregon -- Lincoln County1
- Camp songs1
- Cascade Head Scenic-Research Area (Or.)1
- Cascade Range Region1