@misc{indiciae86fd7ffa3f64,
  title = {Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: January 1981},
  author = {John B. Townshend and J.E. Papp and E.A. Sauter and S.P. Tilton},
  year = {1981},
  doi = {10.3133/ofr81300a},
  url = {https://pubs.usgs.gov/publication/ofr81300A},
  note = {Source identifier: ofr81300A}
}