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- Agriculture 12
- Agricultural laborers 6
- Flax 4
- Oregon State University. Extension Service 4
- Harvesting 2
- Hops 2
- Livestock 2
- Soldiers 2
- Apples 1
- Bridges 1
- Cattle 1
- Clover 1
- Farms 1
- Graminaceae 1
- Hill, Elsie 1
- Mills and mill-work 1
- Packing-houses 1
- Pesticides 1
- Red fescue 1
- Sailors 1
