Portable electric mine lamps.
| Corporate Author: | |
|---|---|
| Format: | Government Document eBook |
| Language: | English |
| Published: |
[Washington] :
GPO,
1913.
|
| Series: | Mines Bur. Tech. Paper No. 47
|
| Subjects: | |
| Online Access: | Connect to the full text of this electronic document |
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