Correlation of the Big Blue Deries in Nebraska /

Bibliographic Details
Main Author:	Condra, Geo. E. (George Evert), 1869-1958
Other Authors:	Upp, Jerry Eli
Format:	Book
Language:	English
Series:	Bulletin (Nebraska Geological Survey) ; no. 6.
Subjects:	Geology > Nebraska. Geology, Stratigraphic > Permian.

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