Mining methods and costs at metal mines of U.S [microform]
Saved in:
| Other Authors: | |
|---|---|
| Format: | Government Document Microfilm Book |
| Language: | English |
| Published: |
Washington, D.C. :
[publisher not identified],
1931.
|
| Series: | Information circular (United States. Bureau of Mines) ;
6503. |
| Subjects: |
Norlin Library - Government Information - Microform
| Call Number: |
EBD C22.11-6503
|
|---|---|
| EBD C22.11-6503 | Restricted Place a Hold |