@misc{indiciae849bf395bdcb,
  title = {Branch of Petroleum Geology bibliography, 1990},
  author = {Helen Y. Colburn},
  year = {1991},
  doi = {10.3133/ofr91365},
  url = {https://pubs.usgs.gov/publication/ofr91365},
  note = {Source identifier: ofr91365}
}