| Author: | Sayres, R. R. |
|---|---|
| Additional Authors: | Jones, G. W., Katz, S. H., Yant, W. P., Smith, N. A. C., Fieldner, A. C., Bloomfield, J. J., Mitchell, C. W., Stark, D. D. |
| Year: | 1923 |
| Document Type: | N/A |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bulletin 231 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc12414/ |