| 000 | 00324pam a2200109a 44500 | ||
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| 082 |
_aTR _bRI-9299 |
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| 100 | _aGregary J. Chekan | ||
| 245 | 1 |
_aIntevactions between multiple seam longwall and room-and pillar operations _ba case study in boone county, WV |
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| 260 |
_a _b _c |
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| 700 | _aJ. Matetic Rudy | ||
| 997 | _aTR6672 C | ||
| 999 |
_c405833 _d405833 |
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