@misc{indiciaea5aa1c5b5672,
  title = {Contour map of the bedrock surface, Meriden quadrangle, Connecticut},
  author = {F.P. Haeni},
  year = {1976},
  doi = {10.3133/mf661a},
  url = {https://pubs.usgs.gov/publication/mf661A},
  note = {Source identifier: mf661A}
}