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Permissible Coal-Handling Equipment: Approved from January, 1926, to December, 1930, Inclusive
| Author: | Ilsley, L. C. |
|---|---|
| Additional Authors: | Gleim, E. J. |
| Year: | 1931 |
| Document Type: | N/A |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bulletin 343 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc12513/ |
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