Palynological studies of Lower Pennsylvanian coal beds and adjacent strata of the proposed Pennsylvanian system stratotype in Virginia and West Virginia a report on the occurrence of Lower Pennsylvanian palynomorphs and their thermal alteration
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Format: | UnknownFormat |
Sprache: | eng |
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Washington
United States Government Print. Office
1988
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Schriftenreihe: | United States Geological Survey: Geological Survey professional paper
1479 |
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Beschreibung: | III, 17 S., 2 Taf. Ill., graph. Darst., Kt. |
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