@misc{indiciae9844057f4342,
  title = {Surficial geologic map of the Mystic quadrangle, Connecticut, New York, and Rhode Island},
  author = {Joseph Edwin Upson},
  year = {1971},
  doi = {10.3133/gq940},
  url = {https://pubs.usgs.gov/publication/gq940},
  note = {Source identifier: gq940}
}