@misc{indiciaef915b9aa0264,
  title = {Preliminary geologic map of the Leadville 1 degree by 2 degrees Quadrangle, northwestern Colorado},
  author = {Ogden Tweto and R. H. Moench and J. C. Reed},
  year = {1976},
  doi = {10.3133/mf760},
  url = {https://pubs.usgs.gov/publication/mf760},
  note = {Source identifier: mf760}
}