@misc{indiciae10154a388a42,
  title = {Preliminary bedrock geologic map of the East Brookfield quadrangle, Worcester County, Massachusetts},
  author = {John S. Pomeroy},
  year = {1975},
  doi = {10.3133/ofr75530},
  url = {https://pubs.usgs.gov/publication/ofr75530},
  note = {Source identifier: ofr75530}
}