@misc{indiciae915a8f843bca,
  title = {Preliminary surficial geologic map of the Palmer Quadrangle south-central Massachusetts},
  author = {John D. Peper},
  year = {1976},
  doi = {10.3133/ofr76489},
  url = {https://pubs.usgs.gov/publication/ofr76489},
  note = {Source identifier: ofr76489}
}