@misc{indiciaefc0a1fd7297e,
  title = {Magnetic anomaly map of Missouri},
  author = {Isidore Zietz and K. R. Bond and F. E. Riggle},
  year = {1985},
  doi = {10.3133/gp965},
  url = {https://pubs.usgs.gov/publication/gp965},
  note = {Source identifier: gp965}
}