| Author: | Gries, John Paul, | 
|---|---|
| Year: | 1950 | 
| Document Type: | BMRA | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.23:4632 | 
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; | 
| Report Number: | 4632 | 
| Subjects: | Pegmatites--South Dakota--Custer County | 
| Lithium ores--South Dakota--Custer County | |
| Link: | https://hdl.handle.net/2027/mdp.39015078487017 |