@misc{indiciaec02f8da62f26,
  title = {Preliminary complete Bouguer gravity map of the Boston 1° x 2° quadrangle, Massachusetts},
  author = {Wallace A. Bothner},
  year = {1978},
  doi = {10.3133/ofr78810},
  url = {https://pubs.usgs.gov/publication/ofr78810},
  note = {Source identifier: ofr78810}
}