@misc{indiciaeabd37cf81636,
  title = {Surficial geologic map of the West Springfield quadrangle, Massachusetts and Connecticut},
  author = {Roger B. Colton and Joseph H. Hartshorn},
  year = {1971},
  doi = {10.3133/gq892},
  url = {https://pubs.usgs.gov/publication/gq892},
  note = {Source identifier: gq892}
}