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New Albany Shale - Wikipedia
New Albany Shale | Indiana Geological & Water Survey
New Albany Shale, Illinois Basin, southwestern Indiana
The New Albany shale in Illinois: emerging play or prolific source
Geolex — NewAlbany publications - USGS
New Albany Shale | Indiana Geological & Water Survey
The New Albany shale in Illinois: Emerging play or prolific source
New Albany Shale Group - ILSTRAT - University of Illinois Urbana …