@misc{indiciae3fddf1cbf2cd,
  title = {Geologic map of the Sandwich quadrangle, Barnstable County, Cape Cod, Massachusetts},
  author = {Robert N. Oldale},
  year = {1975},
  doi = {10.3133/gq1222},
  url = {https://pubs.usgs.gov/publication/gq1222},
  note = {Source identifier: gq1222}
}