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Royal Belgian Institute for Natural Sciences (4)


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book (4)


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English (4)


Year
From To Submit

1988 (3)

1952 (1)

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Book
Palynological analyses of Upper Pennsylvanian coal beds and adjacent strata from the proposed Pennsylvanian System stratotype in West Virginia
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Year: 1988 Publisher: Washington U. S. Geological Survey

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Petrographic and Microchemical Studies of Coal : 2d Confer. Origin. & Const. Coal. Nova Scotia.
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Year: 1952 Publisher: Crystal Cliffs s.n.

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Palynological studies of Middle Pennsylvanian coal beds of the proposed Pennsylvania System stratotype in West Virginia
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Year: 1988 Publisher: Washington U. S. Geological Survey

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Palynological studies of Lower Pennsylvanian coal beds and adjacent strata of the proposed Pennsylvanian System stratotype in Virginia and West Virginia
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Year: 1988 Publisher: Washington U. S. Geological Survey

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