@misc{indiciaec90f31ff03eb,
  title = {Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: April 1982},
  author = {John B. Townshend and J.E. Papp and E.A. Sauter and L.Y. Torrence},
  year = {1982},
  doi = {10.3133/ofr82300d},
  url = {https://pubs.usgs.gov/publication/ofr82300D},
  note = {Source identifier: ofr82300D}
}