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Agricultural crops
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Crop and Soil Science
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Oregon Experiment Station
Citation -
2. [Image] Horse drawn equipment and tractor, 1927
Oregon Experiment StationCitation -
3. [Image] Horse drawn equipment, 1926
Oregon Experiment StationCitation -
4. [Image] Horse drawn flatbed wagon, 1926
Oregon Experiment StationCitation -
5. [Image] Homemade harvesting machinery, 1925
Horse drawn equipment, Coos CountyCitation -
6. [Image] Grass cutting, Coos County, 1925
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7. [Image] Homemade harvesting machinery, 1925
Horse drawn equipment, Coos CountyCitation -
8. [Image] Harvesting with horse drawn equipment, 1922
Oregon Experiment StationCitation -
9. [Image] Cutting vetch, June 4, 1919
Oregon Experiment StationCitation -
10. [Image] Threshing vetch
Oregon Experiment StationCitation