| Author: | Andrews, David A. |
|---|---|
| Additional Authors: | Hendricks, Thomas A. |
| Year: | 1947 |
| Document Type: | N/A |
| SUDOC: | I 28.7:696 |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Technical Paper 696 |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc66469/ |