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- Hops 45
- Barley 11
- Scientific apparatus and instruments 4
- Universities and colleges--Faculty 2
- Agricultural laborers 1
- Agriculture 1
- Brewing 1
- Deans (Education) 1
- Foote, Wilson H. 1
- Harvesting 1
- Oregon State University. Agricultural Experiment Station 1
- Price, F. E. (Frederick Earl), 1898- 1
- Rohde, Charles R. 1