@misc{indiciae253ed0789868,
  title = {Magnetic total intensity in the United States; epoch, 1975.0},
  author = {E.B. Fabiano and N.W. Peddie and W. J. Jones},
  year = {1976},
  doi = {10.3133/i915},
  url = {https://pubs.usgs.gov/publication/i915},
  note = {Source identifier: i915}
}