Paleoecological interpretation of a middle Pennsylvanian coal bed in the central Appalachian basin, U.S.A.
| Autor: | Eble, Cortland F., Grady, William C. |
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| Zdroj: | In International Journal of Coal Geology 1990 16(4):255-286 |
| Databáze: | ScienceDirect |
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