| Author: | Becker, Robert M. | 
|---|---|
| Year: | 1968 | 
| Document Type: | BMRA | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.23:7177 | 
| Series: | Report of investigations / Bureau of Mines ; | 
| Report Number: | 7177 | 
| Subject: | Ores--Sampling and estimation | 
| Link: | https://hdl.handle.net/2027/mdp.39015078471839 |