@misc{indiciaec0a9d156cb85,
  title = {Areas of historical oil and gas exploration and production in the United States},
  author = {Laura Biewick},
  year = {2008},
  doi = {10.3133/ds69q},
  url = {https://pubs.usgs.gov/publication/ds69Q},
  note = {Source identifier: ds69Q}
}