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- Agricultural experiment stations 31
- World War, 1939-1945 24
- Oregon State Agricultural College. Agricultural Experiment Station 13
- Foote, Wilson H. 12
- Oregon Agricultural College. Experiment Station 11
- Universities and colleges--Faculty 11
- Agriculture 9
- Award presentations 8
- Alien plants 7
- Besse, Ralph S. (Ralph Stephen), 1887- 7
- Pectin 5
- Wood, G. B. (Gregory Burton), 1909- 5
- Crop and Soil Science 4
- Gluten 4
- Kronstad, Warren E. (Warren Ervind), 1932- 4
- Meetings 4
- Oregon State College. Agricultural Experiment Station 4
- Oregon State University. Agricultural Experiment Station 4
- Sheep--Feeding and feeds 4
- College presidents 3