@misc{indiciae9740fe19e2be,
  title = {Interim surficial geologic map of the Shirley quadrangle, Massachusetts},
  author = {Richard Waldron Allmendinger and William D. Schneider},
  year = {1976},
  doi = {10.3133/ofr76388},
  url = {https://pubs.usgs.gov/publication/ofr76388},
  note = {Source identifier: ofr76388}
}