TY  - RPRT
TI  - Changing Perceptions of World Oil and Gas Resources as Shown by Recent USGS Petroleum Assessments
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1997
DO  - 10.3133/fs14597
UR  - https://pubs.usgs.gov/publication/fs14597
ID  - fs14597
ER  -