2000 resources assessment of selected coal beds and zones in the Northern and Central Appalachian Basin coal regions
Uloženo v:
| Jazyk: | Angličtina |
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| Vydáno: |
Denver :
U.S. Department of the Interior,
2001.
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| Edice: | Professional paper ;
1625-C |
| Témata: |
| Fyzický popis: | 1 CD-ROM. |
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| ISBN: | 0-607-96244-5 |