North America shale gas map /
Petroleum Economist Cartographic (Firm)cartographer.
Fuller, K.designer.
Bush, P.designer.
Norske stats oljeselskap
Title from cover when folded.
"January 2014".
"Produced by Petroleum Economist in association with Statoil".
Includes data tables and charts.
Relief shown by gradient tints. Depths shown by bathymetric tints.