@misc{indiciae9e094433132f,
  title = {Surficial Geologic Map of the Clinton-Concord-Grafton-Medfield 12-Quadrangle Area in East Central Massachusetts},
  author = {Janet Radway Stone and Byron D. Stone},
  year = {2006},
  doi = {10.3133/ofr20061260a},
  url = {https://pubs.usgs.gov/publication/ofr20061260A},
  note = {Source identifier: ofr20061260A}
}