@misc{indiciaea6cb55ea28b1,
  title = {Application of magnetic and electromagnetic methods to locate buried metal},
  author = {Robert Horton},
  year = {2003},
  doi = {10.3133/ofr03317},
  url = {https://pubs.usgs.gov/publication/ofr03317},
  note = {Source identifier: ofr03317}
}