Author: | Harrington, D. |
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Year: | 1921 |
Document Type: | USBM |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.7:251 |
Series: | Technical paper / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 251 |
Subject: | Mine ventilation--United States |
Link: | https://hdl.handle.net/2027/mdp.39015077559899 |