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- Oregon Agricultural College. Experiment Station 52
- Plants, Cultivated--Field experiments 25
- Sulfur fertilizers 24
- Oregon State Agricultural College. Agricultural Experiment Station 12
- Nitrogen fertilizers 5
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- Oregon >> United States 34
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Local Collection Name
- Agricultural Experiment Station Photographic Collection, ca. 1900-1988 (P 029) 52
Format
- image/tiff 52