@misc{indiciae1e243a73f56a,
  title = {Bedrock geologic map of the Framingham quadrangle, Middlesex and Worcester Counties, Massachusetts},
  author = {Arthur E. Nelson},
  year = {1975},
  doi = {10.3133/gq1274},
  url = {https://pubs.usgs.gov/publication/gq1274},
  note = {Source identifier: gq1274}
}