Subject
- Agricultural pests -- Control -- Congresses28
- Forests and forestry -- Oregon -- Measurement9
- Forests and forestry -- Measurement5
- Insecticides -- Research5
- Douglas fir4
- Forests and forestry -- Oregon -- Measurement -- Mathematical models4
- Trees -- Oregon -- Measurement4
- Barred owl -- Reproduction3
- Northern spotted owl -- Reproduction3
- Apple maggot -- Control2
- Apples -- Diseases and pests2
- Chinook salmon2
- Climatic changes -- Oregon -- Evaluation2
- Coho salmon2
- Conifers -- Oregon -- Growth -- Mathematical models2
- Estuarine oceanography2
- Forests and forestry -- Measurement -- Bibliography2
- Forests and forestry -- Northwest, Pacific -- Bibliography2
- Oregon -- Economic conditions2
- Salmon -- Effect of habitat modification on -- Oregon2