@misc{indiciaebd9c6529b6f7,
  title = {Preliminary surficial geologic map of the Monson Quadrangle, Massachusetts and Connecticut},
  author = {John D. Peper},
  year = {1975},
  doi = {10.3133/ofr75374},
  url = {https://pubs.usgs.gov/publication/ofr75374},
  note = {Source identifier: ofr75374}
}