@misc{indiciae03c7edc7d347,
  title = {Branch of Petroleum Geology bibliography, 1992},
  author = {Helen Colburn},
  year = {1992},
  doi = {10.3133/ofr93330},
  url = {https://pubs.usgs.gov/publication/ofr93330},
  note = {Source identifier: ofr93330}
}