@misc{indiciae804d23b3c415,
  title = {Aeromagnetic map of the Ridgway-Pagosa Springs area, southwestern Colorado},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1972},
  doi = {10.3133/gp840},
  url = {https://pubs.usgs.gov/publication/gp840},
  note = {Source identifier: gp840}
}