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Topic
- Agriculture 25
- Farm ownership 20
- Farm tenancy--Economic aspects 20
- Farms--Oregon 16
- Oregon State University. Extension Service 5
- Ranches--Oregon 4
- Universities and colleges--Faculty 2
- 4-H clubs 1
- Agricultural machinery 1
- Animal feeding 1
- Cattle 1
- Cattle--Marking 1
- Hay 1
- Horses 1
- Mountains--Oregon 1
- Ranches 1