@misc{indiciae7c72627f1395,
  title = {Magnetic anomaly map of North America},
  author = {North American Magnetic Anomaly Group and Viki Bankey and Alejandro Cuevas and David L. Daniels and Carol A. Finn and Israel Hernandez and Patricia L. Hill and Robert Kucks and Warner Miles and Mark Pilkington and Carter Roberts and Walter Roest and Victoria Rystrom and Sarah Shearer and Stephen L. Snyder and Ronald E. Sweeney and Julio Velez},
  year = {2002},
  doi = {10.3133/70211067},
  url = {https://pubs.usgs.gov/publication/70211067},
  note = {Source identifier: 70211067}
}