@misc{indiciaeaa6175604ba8,
  title = {Bedrock geologic map of the Pittsfield East quadrangle, Berkshire County, Massachusetts},
  author = {Nicholas M. Ratcliffe},
  year = {1984},
  doi = {10.3133/gq1574},
  url = {https://pubs.usgs.gov/publication/gq1574},
  note = {Source identifier: gq1574}
}