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Contributed Photo DR. COLIN MCKEEN, right, and his wife Beatrice in Nova Scotia with an American chestnut tree trunk between them. Saving the endangered tree is a mission for Dr. McKeen.  |
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Contributed Photo DR. COLIN MCKEEN, right, and his wife Beatrice in Nova Scotia with an American chestnut tree trunk between them. Saving the endangered tree is a mission for Dr. McKeen. |
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