@misc{indiciae42e2a94d96ac,
  title = {Preliminary list of deep borings in the United States},
  author = {Nelson Horatio Darton},
  year = {1905},
  doi = {10.3133/wsp149},
  url = {https://pubs.usgs.gov/publication/wsp149},
  note = {Source identifier: wsp149}
}