@misc{indiciaea6f5b9791857,
  title = {Map showing resources of coarse aggregate, Tariffville quadrangle, Connecticut-Massachusetts},
  author = {Fred Pessl},
  year = {1973},
  doi = {10.3133/mf512b},
  url = {https://pubs.usgs.gov/publication/mf512B},
  note = {Source identifier: mf512B}
}