| Author: | Fergus, A. J. | 
|---|---|
| Additional Authors: | Sullivan, G. V. | 
| Year: | 1968 | 
| Document Type: | BMRA | 
| Issuing Agency: | Bureau of Mines, U.S. Dep. of the Interior, | 
| Series: | Report of investigations / Bureau of Mines ; | 
| Report Number: | 7189 | 
| Subjects: | Tantalum | 
| Niobium | |
| Link: | https://hdl.handle.net/2027/mdp.39015078537738 |