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Topic
- Corn 102
- Croplands 30
- Crops 9
- Cornstalks 8
- Corn industry 7
- Agriculture 6
- Fertilizers 6
- Oregon State University. Extension Service 5
- Pumpkin 5
- Agricultural exhibitions 4
- Agricultural laborers 4
- Universities and colleges--Faculty 4
- Apples 3
- Farm produce 3
- Peanuts 3
- Potatoes 3
- Agriculture--Economic aspects 2
- Barns 2
- Exhibitions 2
- Farm life 2
