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National Mine-Rescue and First-Aid Conference: Pittsburgh, Pennsylvania, September 23-26, 1912
| Author: | Wilson, Herbert M. |
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| Year: | 1913 |
| Document Type: | N/A |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bulletin 62 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc12275/ |
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