@misc{indiciaec89cb7f53044,
  title = {Interpretation of aeromagnetic maps},
  author = {V. Vacquier and Nelson Clarence Steenland and R.G. Henderson and Isadore Zietz},
  year = {1951},
  doi = {10.1130/mem47-p1},
  url = {https://pubs.usgs.gov/publication/70221637},
  note = {Source identifier: 70221637}
}