@misc{indiciae48401767f585,
  title = {Bedrock geologic map of the Columbia quadrangle, east-central Connecticut},
  author = {George L. Snyder},
  year = {1967},
  doi = {10.3133/gq592},
  url = {https://pubs.usgs.gov/publication/gq592},
  note = {Source identifier: gq592}
}