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Why, when, and how to make ventilation surveys of metal mines
| Author: | McElroy, G. E. |
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| Year: | 1928 |
| Document Type: | MAIN |
| SUDOC: | C 22.11:6086 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6086 |
| Subject: | Mine ventilation |
| Link: | https://hdl.handle.net/2027/mdp.39015095077528 |
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