@misc{indiciae81666792f84b,
  title = {Preliminary geomagnetic data, College Observatory, Fairbanks},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1992},
  doi = {10.3133/ofr92300b},
  url = {https://pubs.usgs.gov/publication/ofr92300B},
  note = {Source identifier: ofr92300B}
}