@misc{indiciaef1028b619fa9,
  title = {Map showing unconsolidated materials, Glastonbury quadrangle, Connecticut},
  author = {W. H. Langer},
  year = {1976},
  doi = {10.3133/mf561d},
  url = {https://pubs.usgs.gov/publication/mf561D},
  note = {Source identifier: mf561D}
}