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- Agriculture 100
- Farm ownership 81
- Farm tenancy--Economic aspects 78
- Farms--Oregon 74
- Agricultural laborers 7
- Ranches--Oregon 7
- Oregon State University. Extension Service 6
- Agricultural machinery 5
- Peas 3
- Wheat 3
- Combines (Agricultural machinery) 2
- Farmers 2
- Farms 2
- Horses 2
- Packing-houses 2
- Warehouses 2
- Alfalfa 1
- Apiaries 1
- Barns 1
- Bee culture 1