@misc{indiciaeab0e1102a1c4,
  title = {Geologic map of the Plainfield quadrangle, Franklin, Hampshire, and Berkshire Counties, Massachusetts},
  author = {Philip Henry Osberg and Norman L. Hatch and Stephen A. Norton},
  year = {1971},
  doi = {10.3133/gq877},
  url = {https://pubs.usgs.gov/publication/gq877},
  note = {Source identifier: gq877}
}