@misc{indiciae526180d93cd2,
  title = {Aeromagnetic map of the Leicester quadrangle, Worcester County, Massachusetts},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1968},
  doi = {10.3133/gp624},
  url = {https://pubs.usgs.gov/publication/gp624},
  note = {Source identifier: gp624}
}