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Photographer
- Henderson, Robert W. (Robert Wesley), 1914-2006 19
Topic
- Agricultural experiment stations 19
- Signs and signboards 6
- Exhibitions 5
- Oregon State University. Cooperative Extension Service 4
- Research 4
- Oregon State University 3
- Pesticides 2
- Maps 1
- Oregon State University. Agricultural Experiment Station 1
Language
- English 19
Format
- image/tiff 19