@misc{indiciae082b18f10812,
  title = {Bouguer gravity map of the Lake Champlain 1° x 2° quadrangle, New York, Vermont, and New Hampshire},
  author = {Robert W. Simpson and Wallace A. Bothner and R.P. Kucks},
  year = {1979},
  doi = {10.3133/ofr79958},
  url = {https://pubs.usgs.gov/publication/ofr79958},
  note = {Source identifier: ofr79958}
}