| Author: | Koch, R. K. | 
|---|---|
| Additional Authors: | Beall, R. A., Anable, W. E. | 
| Year: | 1968 | 
| Document Type: | BMRA | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.23:7125 | 
| Series: | Report of investigations / Bureau of Mines ; | 
| Report Number: | 7125 | 
| Subjects: | Niobium | 
| Hafnium | |
| Link: | https://hdl.handle.net/2027/mdp.39015078537365 |