Subject
- Agricultural pests -- Control -- Congresses4
- Forests and forestry2
- Forests and forestry -- Oregon2
- Aged -- Oregon -- Econometric models1
- Cutover lands1
- Decision support systems1
- Decision-making -- Data processing1
- Douglas fir -- Growth1
- Douglas fir -- Oregon -- Growth -- Mathematical models1
- Dust control1
- Forests and forestry -- Planning -- Mathematical models1
- Guidance systems (Flight)1
- Human-computer interaction1
- Lawns -- Fertilizers -- Oregon1
- Migration, Internal -- Oregon -- Econometric models1
- Plant competition1
- Plantation Simulator Mixed Evergreen (Computer program)1
- Reforestation -- Oregon1
- Retirement, Places of -- Oregon -- Econometric models1
- Turfgrasses -- Seeds1