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- Agriculture 5
- Oregon State Agricultural College. Agricultural Experiment Station 5
- Foote, Wilson H. 4
- Oregon Agricultural College. Experiment Station 3
- Pears 3
- Plants--Wounds and injuries 3
- Henderson, Robert W. (Robert Wesley), 1914-2006 2
- Hops 2
- Pears--Diseases and pests 2
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Work Type
- photographic prints 19
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- Oregon >> United States 19
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- image/tiff 19