@misc{indiciaeed857a222824,
  title = {Preliminary bedrock geologic map of the Pittsfield East Quadrangle, Massachusetts},
  author = {Nicholas M. Ratcliffe},
  year = {1978},
  doi = {10.3133/ofr78952},
  url = {https://pubs.usgs.gov/publication/ofr78952},
  note = {Source identifier: ofr78952}
}