@misc{indiciaef63c3f0ea069,
  title = {Investigation of the deep well in the Mesa Verde National Park, Colorado},
  author = {Penn Livingston and William Hale},
  year = {1949},
  doi = {10.3133/ofr4991},
  url = {https://pubs.usgs.gov/publication/ofr4991},
  note = {Source identifier: ofr4991}
}