@misc{indiciae0d6bee0227c6,
  title = {Map showing unconsolidated materials, Springfield South quadrangle, Massachusetts-Connecticut},
  author = {Carl Koteff},
  year = {1973},
  doi = {10.3133/mf509a},
  url = {https://pubs.usgs.gov/publication/mf509A},
  note = {Source identifier: mf509A}
}