@misc{indiciae4ee6aac57896,
  title = {Geologic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut},
  author = {Joseph H. Hartshorn and Carl Koteff},
  year = {1967},
  doi = {10.3133/gq678},
  url = {https://pubs.usgs.gov/publication/gq678},
  note = {Source identifier: gq678}
}