Author: | Varley, Thomas |
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Additional Authors: | Barrett, E. P., Stevenson, C. C. |
Year: | 1923 |
Document Type: | N/A |
Issuing Agency: | United States. Bureau of Mines. |
Series: | United States Bureau of Mines Reports |
Report Number: | Bulletin 211 |
Link: | https://digital.library.unt.edu/ark:/67531/metadc12397/ |