@misc{indiciae22f077d65b72,
  title = {Surficial geologic map of the Holliston quadrangle, Middlesex, Norfolk, and Worcester Counties, Massachusetts},
  author = {Richard P. Volckmann},
  year = {1975},
  doi = {10.3133/gq1217},
  url = {https://pubs.usgs.gov/publication/gq1217},
  note = {Source identifier: gq1217}
}