Date: | 1962 |
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Description: | A group of men gathered around an International Harvester HT-340 experimental research tractor that a man is driving. |
Date: | 1962 |
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Description: | Elevated view of a crowd of men, teenagers, and children gathered around an International Harvester HT-340 experimental research tractor. |
Date: | 1962 |
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Description: | Ann Felker gives a presentation on the effects of X-ray radiation on guinea pig immunity. |
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