Ultra low frequency electromagnetic fire alarm system for underground mines /
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| Main Author: | |
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| Other Authors: | , |
| Format: | Book |
| Language: | English |
| Published: |
[Washing, D.C.] :
Bureau of Mines, U.S. Dept. of the Interior,
1991.
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| Series: | Report of investigations ; 9377
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| Subjects: | |
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