TY  - RPRT
TI  - Map of assessed shale gas in the United States, 2012
AU  - U.S. Geological Survey National Assessment of Oil and Gas Resources Team
AU  - Laura R. H. Biewick
PY  - 2013
DO  - 10.3133/ds69z
UR  - https://pubs.usgs.gov/publication/ds69Z
ID  - ds69Z
ER  -