@misc{indiciae226a3d7fffda,
  title = {Surficial geologic map of the Monson quadrangle, Massachusetts and Connecticut},
  author = {John D. Peper},
  year = {1977},
  doi = {10.3133/gq1429},
  url = {https://pubs.usgs.gov/publication/gq1429},
  note = {Source identifier: gq1429}
}