@misc{indiciaef87dfed8319e,
  title = {Bedrock geologic map of the Putnam quadrangle, Windham County, Connecticut},
  author = {H. Roberta Dixon},
  year = {1982},
  doi = {10.3133/gq1562},
  url = {https://pubs.usgs.gov/publication/gq1562},
  note = {Source identifier: gq1562}
}