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Creator
- Henderson, Robert W. (Robert Wesley), 1914-2006 45
Topic
- Croplands 45
- Universities and colleges--Faculty 45
- Crop and Soil Science 27
- Boersma, L. 23
- Soybean 11
- Central Oregon Agricultural Research Center 7
- Johnson, M. J. (Malcolm Julius) 7
- Kronstad, Warren E. (Warren Ervind), 1932- 4
- Sudan grass 4
- Wheat 4
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License
- Creative Commons: Attribution-NoDerivatives 4.0 International 45
Format
- image/tiff 45