Historical Images of Oregon State University
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Topic
- Oregon Agricultural College. Experiment Station 32
- Plants, Cultivated--Field experiments 27
- Sulfur fertilizers 27
- Potassium fertilizers 6
- Agriculture 5
- Nitrogen fertilizers 5
- Oregon State Agricultural College. Agricultural Experiment Station 4
- Plants 4
- Research 4
- Croplands 3
- Hens 3
- Knowlton, Frank L. (Frank Lester), 1894-1940 3
- Poultry 3
- Universities and colleges--Faculty 3
- Wheat 3
- Agricultural machinery 2
- Experiments 2
- Sheep--Diseases 2
- Foote, Wilson H. 1
- Harrows 1