| Author: | Hubbard, C. R. |
|---|---|
| Additional Authors: | Roby, Robert N., Henkes, W. C. |
| Year: | 1964 |
| Document Type: | N/A |
| SUDOC: | I 28.27:8229 |
| Series: | Information circular (United States. Bureau of Mines) |
| Report Number: | I. C. 8229 |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc67127/ |