@misc{indiciae29fd54e02fef,
  title = {Geology and petroleum potential, Colorado Park Basin province, north-central Colorado},
  author = {Edwin K. Maughan},
  year = {1988},
  doi = {10.3133/ofr88450e},
  url = {https://pubs.usgs.gov/publication/ofr88450E},
  note = {Source identifier: ofr88450E}
}