@misc{indiciae0317ff901e3d,
  title = {Geothermal data of the United States, including many original determinations of underground temperature},
  author = {Nelson Horatio Darton},
  year = {1920},
  doi = {10.3133/b701},
  url = {https://pubs.usgs.gov/publication/b701},
  note = {Source identifier: b701}
}