@misc{indiciaeb13f03f3c638,
  title = {Preliminary bedrock geologic maps of the Lynn and Marblehead South quadrangles, Massachusetts},
  author = {Kenneth Granville Bell},
  year = {1977},
  doi = {10.3133/ofr77180},
  url = {https://pubs.usgs.gov/publication/ofr77180},
  note = {Source identifier: ofr77180}
}