@misc{indiciaed615460b5afd,
  title = {Aeromagnetic map of the Athol quadrangle, Worcester and Franklin Counties, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1971},
  doi = {10.3133/gp736},
  url = {https://pubs.usgs.gov/publication/gp736},
  note = {Source identifier: gp736}
}