@misc{indiciaeea6cd666dc0a,
  title = {Geologic map and section of Piceance Creek Dome, Colorado},
  author = {W.B. Kramer and R. McMillan and P. W. Guild},
  year = {1939},
  doi = {10.3133/ofr395},
  url = {https://pubs.usgs.gov/publication/ofr395},
  note = {Source identifier: ofr395}
}