@misc{indiciae45bf42903922,
  title = {Aeromagnetic map of the Germantown and part of the Poolesville quadrangles, Montgomery and Frederick Counties, Maryland},
  author = {Jean Blanchett and N.S. Tyson and E.F. McGowan},
  year = {1963},
  doi = {10.3133/gp394},
  url = {https://pubs.usgs.gov/publication/gp394},
  note = {Source identifier: gp394}
}