Document details
| Author: |
Williamson, George H. |
| Year: |
1932 |
| Document Type: |
USBI |
| Issuing Agency: |
U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: |
C 22.11:6582 |
| Series: |
Information circular / United States Department of Commerce, Bureau of Mines ; |
| Report Number: |
6582 |
| Subjects: |
Dredges--Pennsylvania--Pittsburgh |
| Mining engineering--Pennsylvania--Pittsburgh |
| Mines and mineral resources--Pennsylvania--Pittsburgh |
| Mineral industries--Pennsylvania--Pittsburgh |
| Link: |
https://hdl.handle.net/2027/mdp.39015074128193 |
