@misc{indiciae0531b0769766,
  title = {Preliminary geologic map and section of the Barcus Creek Quadrangle, Rio Blanco County, Colorado},
  author = {W. J. Hail},
  year = {1974},
  doi = {10.3133/mf619},
  url = {https://pubs.usgs.gov/publication/mf619},
  note = {Source identifier: mf619}
}