@misc{indiciaedfafd09d8f07,
  title = {Aeromagnetic map of the Framingham quadrangle, Middlesex and Worcester Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/gp674},
  url = {https://pubs.usgs.gov/publication/gp674},
  note = {Source identifier: gp674}
}