1.
Petroleum Geology of the Devonian and Mississippian Black Shale of North America
by Roen, J. B., Kepferle, R. C.
ISBN: 9780788103544
List Price: $95.00
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Lithologic and stratigraphic description of cores of organic-rich shale of Late Devonian and...
by R. C. Kepferle, J. D. Beard...
ISBN: 9781288853045
List Price: $17.75