Author: | Jeran, P. W. |
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Additional Authors: | Mashey, J. R., |
Year: | 1970 |
Document Type: | USBI |
Issuing Agency: | U.S. Bureau of Mines, |
SUDOC: | I 28.27:8454 |
Series: | Information circular / Bureau of Mines ; |
Report Number: | 8454 |
Subject: | Coal mines and mining--Data processing |
Link: | https://hdl.handle.net/2027/mdp.39015077578014 |