@misc{indiciae5b94fa2057db,
  title = {Preliminary geologic map of the Barcus Creek SE quadrangle, Rio Blanco County, Colorado},
  author = {William James Hail},
  year = {1972},
  doi = {10.3133/mf347},
  url = {https://pubs.usgs.gov/publication/mf347},
  note = {Source identifier: mf347}
}