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The National safety competition of 1959
| Author: | Machisak, John C. |
|---|---|
| Additional Authors: | Wrenn, Virginia E., Elsner, Elizabeth K. |
| Year: | 1961 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8022 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 8022 |
| Subject: | Mine safety |
| Link: | https://hdl.handle.net/2027/mdp.39015078464131 |
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