Author: | Hershey, Robert E. |
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Additional Authors: | Williams, Lloyd |
Year: | 1955 |
Document Type: | N/A |
Series: | United States Bureau of Mines Reports |
Report Number: | R. I. 5148 |
Subjects: | Coking coal. |
Coal reserves. | |
Link: | http://digital.library.unt.edu/ark:/67531/metadc38629/ |