Subject
- Douglas fir -- Nebraska1
- Douglas fir -- Nebraska -- Genetics1
- Douglas fir -- Nebraska -- Seeds1
- Douglas fir -- Seeds1
- Douglas fir -- Washington (State) -- Wind River Valley1
- Exotic forestry -- Washington (State) -- Wind River Valley1
- Forest genetics1
- Forest genetics -- Washington (State) -- Wind River Valley1
- Plant introduction -- Washington (State) -- Wind River Valley1
- Ponderosa pine -- Disease and pest resistance -- Oregon -- Deschutes National Forest -- Genetic aspects1
- Ponderosa pine -- Diseases and pests -- Oregon -- Deschutes National Forest1
- Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)1
- Seed orchards1
- Western pine shoot borer -- Oregon -- Deschutes National Forest1
- Wind River Valley (Wash.)1