@misc{indiciae11f3b65c569f,
  title = {Photogeologic map of the Delta Quadrangle, Montrose and Delta counties, Colorado},
  author = {C. H. Marshall},
  year = {1958},
  doi = {10.3133/tem1072},
  url = {https://pubs.usgs.gov/publication/tem1072},
  note = {Source identifier: tem1072}
}