@misc{indiciaef0210545e234,
  title = {Map showing unconsolidated materials, Broad Brook quadrangle, Connecticut},
  author = {W. H. Langer and R. B. Colton},
  year = {1973},
  doi = {10.3133/mf451b},
  url = {https://pubs.usgs.gov/publication/mf451B},
  note = {Source identifier: mf451B}
}