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Topic
- Booster, Dean E. 13
- Universities and colleges--Faculty 12
- Agricultural Engineering 10
- Harvesting machinery 5
- Universities and colleges--Alumni and alumnae 5
- Strawberries 4
- Rodgers, Jefferson B. 3
- Agricultural machinery 2
- Foote, Wilson H. 2
- Oregon State University. Agricultural Experiment Station 2
- Agricultural engineering 1
- Kirk, Dale E. (Dale Earl), 1918- 1
- Wood, G. B. (Gregory Burton), 1909- 1
