@misc{indiciaef8e78e2d2eb3,
  title = {Changing Perceptions of World Oil and Gas Resources as Shown by Recent USGS Petroleum Assessments},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1997},
  doi = {10.3133/fs14597},
  url = {https://pubs.usgs.gov/publication/fs14597},
  note = {Source identifier: fs14597}
}