Logistics of underground coal mining/
51
| Main Author: | |
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| Format: | |
| Published: |
Park Ridge, N.J.: Noyes Pub.,
1984
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| Subjects: |
51
| Main Author: | |
|---|---|
| Format: | |
| Published: |
Park Ridge, N.J.: Noyes Pub.,
1984
|
| Subjects: |