@misc{indiciae9bdee0fab776,
  title = {Reconnaissance map showing relative amounts of soil and bedrock in the mountainous part of the Larkspur Quadrangle, Douglas and El Paso counties, Colorado},
  author = {P. W. Schmidt},
  year = {1979},
  doi = {10.3133/mf1061},
  url = {https://pubs.usgs.gov/publication/mf1061},
  note = {Source identifier: mf1061}
}