@misc{indiciae296e58aea5fa,
  title = {Bedrock geology of the Salem quadrangle and vicinity, Massachusetts},
  author = {Priestley Toulmin},
  year = {1964},
  doi = {10.3133/b1163a},
  url = {https://pubs.usgs.gov/publication/b1163A},
  note = {Source identifier: b1163A}
}