@misc{indiciaee2a0ac6abf0f,
  title = {Surficial and bedrock geologic map of the Golden Quadrangle, Jefferson County, Colorado},
  author = {Richard Van Horn},
  year = {1972},
  doi = {10.3133/i761a},
  url = {https://pubs.usgs.gov/publication/i761A},
  note = {Source identifier: i761A}
}