Author: | Abernathy, R. F. |
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Additional Authors: | Gibson, F. H. |
Year: | 1962 |
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
Series: | Information Circular / Bureau of Mines ; |
Report Number: | 8163 |
Subject: | Coal |
Link: | https://hdl.handle.net/2027/mdp.39015077564733 |