@misc{indiciae464542374c4e,
  title = {Bedrock geology of the Colrain quadrangle, Massachusetts-Vermont},
  author = {Kenneth K. Segerstrom},
  year = {1956},
  doi = {10.3133/gq86},
  url = {https://pubs.usgs.gov/publication/gq86},
  note = {Source identifier: gq86}
}