@misc{indiciae60fd0560c72d,
  title = {Airport geomagnetic surveys in the United States},
  author = {A. Berarducci},
  year = {2006},
  doi = {10.1007/978-1-4020-5025-1\_19},
  url = {https://pubs.usgs.gov/publication/70028813},
  note = {Source identifier: 70028813}
}