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John E. Erwin (jwearing jeans) professor, Horticultural Scince, and graduate student Jonathon Hensley (wearing short sleeve shirt and shorts)
John E. Erwin (jwearing jeans) professor, Horticultural Scince, and graduate student Jonathon Hensley (wearing short sleeve shirt and shorts)
John E. Erwin (jwearing jeans) professor, Horticultural Scince, and graduate student Jonathon Hensley (wearing short sleeve shirt and shorts)
John E. Erwin (jwearing jeans) professor, Horticultural Scince, and graduate student Jonathon Hensley (wearing short sleeve shirt and shorts)
John E. Erwin (jwearing jeans) professor, Horticultural Scince, and graduate student Jonathon Hensley (wearing short sleeve shirt and shorts)
John E. Erwin, professor, Horticultural Scince
John E. Erwin, professor, Horticultural Scince
John E. Erwin, professor, Horticultural Scince
John E. Erwin, professor, Horticultural Scince
John Elson (?), Buried chernozem soil.