@misc{indiciae88820df2ff23,
  title = {Reconnaissance map showing relative amounts of soil and bedrock in the Drake Quadrangle, Larimer County, Colorado},
  author = {P. W. Schmidt},
  year = {1978},
  doi = {10.3133/mf994},
  url = {https://pubs.usgs.gov/publication/mf994},
  note = {Source identifier: mf994}
}