@misc{indiciae2cc96fa7aae4,
  title = {Geologic map of the southern part of the Piceance Creek basin, northwestern Colorado},
  author = {W. J. Hail and M. C. Smith},
  year = {1997},
  doi = {10.3133/i2529},
  url = {https://pubs.usgs.gov/publication/i2529},
  note = {Source identifier: i2529}
}