OSU Special Collections & Archives Research Center
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Topic
- Forests and forestry 6
- Croplands 2
- Cutover lands 2
- Trees--Diseases and pests 2
- Willamette River Valley (Or.) 2
- Bark beetles 1
Work Type
- aerial photographs 6
- color photographs 6
- color slides 6
- photographs 6
Region
- Oregon >> United States 6