Subject
- Agroforestry systems -- Oregon -- Corvallis1
- Forests and forestry -- Oregon -- Corvallis -- Mathematical models1
- Grassland restoration -- Oregon, Eastern1
- Niche (Ecology) -- Oregon, Eastern1
- Soil fertility -- Oregon, Eastern1
- Steppe ecology -- Oregon, Eastern1
- Western juniper -- Ecology -- Oregon, Eastern1
- Western juniper -- Oregon, Eastern1