Subject
- Burning of land -- Oregon2
- Prescribed burning -- Oregon2
- Agricultural wastes -- Oregon1
- Air -- Pollution -- Oregon1
- Beef cattle -- Breeding -- Oregon1
- Beef cattle -- Evaluation -- Oregon1
- Berries -- Weed control -- Oregon1
- Buprestidae1
- Buprestidae -- Control1
- Cost and standard of living -- United States1
- Dredging -- Environmental aspects -- Oregon -- Yaquina Bay.1
- Environmental impact analysis -- Oregon -- Yaquina Bay.1
- Environmental policy -- Oregon1
- Fish hatcheries -- Oregon1
- Fishing -- Oregon1
- Food prices -- United States1
- Forest roads -- Design and construction1
- Fruit trees -- Diseases and pests -- Control1
- Grapes -- Weed control -- Oregon1
- Grasses -- Seeds1