| Author: | Tyler, Paul McIntosh, |
|---|---|
| Year: | 1932 |
| Document Type: | MAIN |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Information circular ; |
| Report Number: | 6597 |
| Subject: | Minerals--Identification--Directories |
| Link: | https://hdl.handle.net/2027/mdp.39015095085638 |