@misc{indiciaec958a53e498f,
  title = {Geologic map of the Hanover NW quadrangle, El Paso County, Colorado},
  author = {Paul E. Soister},
  year = {1968},
  doi = {10.3133/gq725},
  url = {https://pubs.usgs.gov/publication/gq725},
  note = {Source identifier: gq725}
}