@misc{indiciae43791a25c4ce,
  title = {Preliminary bedrock geologic map of the Putnam quadrangle, Connecticut},
  author = {H. Roberta Dixon},
  year = {1976},
  doi = {10.3133/ofr76271},
  url = {https://pubs.usgs.gov/publication/ofr76271},
  note = {Source identifier: ofr76271}
}