Author: | Perrott, G. St. J. |
---|---|
Year: | 1932 |
Document Type: | N/A |
Issuing Agency: | United States. Bureau of Mines. |
Series: | United States Bureau of Mines Reports |
Report Number: | Bulletin 349 |
Link: | https://digital.library.unt.edu/ark:/67531/metadc12518/ |