@misc{indiciae1a54651ab4dc,
  title = {Reconnaissance map showing relative amounts of soil and bedrock in the Pine quadrangle and adjoining areas to the west in Jefferson County, Colorado},
  author = {P. W. Schmidt},
  year = {1976},
  doi = {10.3133/mf804},
  url = {https://pubs.usgs.gov/publication/mf804},
  note = {Source identifier: mf804}
}