Vertical magnetic noise in the voice frequency band within and above coal mines /
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| Main Author: | |
|---|---|
| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Pgh. [i.e. Pittsburgh], PA. :
U.S. Dept. of the Interior, Bureau of Mines,
1983.
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| Series: | Report of investigations (United States. Bureau of Mines)
8828. |
| Subjects: |