@misc{indiciaedf238eaa594b,
  title = {Wells drilled for oil and gas deeper than 15,000 feet in the conterminous United States and offshore},
  author = {K. I. Takahashi and Kimberley I. Cunningham},
  year = {1983},
  doi = {10.3133/ofr83921},
  url = {https://pubs.usgs.gov/publication/ofr83921},
  note = {Source identifier: ofr83921}
}