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- Oregon State University. Extension Service 31
- Universities and colleges--Faculty 16
- Farmers' markets 11
- Lear, Gene M. 5
- Portraits 5
- Indians of North America 4
- 4-H clubs 3
- Dwellings 2
- Agricultural Chemistry 1
- Agricultural Economics 1
- Agriculture 1
- Awards 1
- Bedell, Thomas E. 1
- Camps 1
- Children 1
- Clerks 1
- Deans (Education) 1
- Farms 1
- Graminaceae 1
- Haag, Oscar 1
