@misc{indiciae2e484eb52aab,
  title = {Preliminary geologic map of the Blandford Quadrangle, Hampden ad Hampshire counties, Massachusetts},
  author = {Norman L. Hatch and Rolfe S. Stanley},
  year = {1973},
  doi = {10.3133/ofr73101},
  url = {https://pubs.usgs.gov/publication/ofr73101},
  note = {Source identifier: ofr73101}
}