TY  - RPRT
TI  - Unconventional natural gas resources on U.S. federal lands
AU  - Robert A. Crovelli
AU  - J. W. Schmoker
AU  - Vito F. Nuccio
PY  - 1998
DO  - 10.3133/fs03098
UR  - https://pubs.usgs.gov/publication/fs03098
ID  - fs03098
ER  -