@misc{indiciae0d7abd057cf4,
  title = {Aeromagnetic map of the Boston North quadrangle, Middlesex, Suffolk, and Essex Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1970},
  doi = {10.3133/gp708},
  url = {https://pubs.usgs.gov/publication/gp708},
  note = {Source identifier: gp708}
}