Pennsylvanian correlations in the eastern interior and Appalachian coal fields /

Bibliographic Details
Main Author:	Wanless, Harold R. (Harold Rollin), 1899-1970
Format:	Book
Language:	English
Published:	[New York] : The Society, 1939.
Series:	Special papers (Geological Society of America) ; 17.
Subjects:	Geology, Stratigraphic > Pennsylvania. Geology > United States.

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