@misc{indiciae22c9851c4acd,
  title = {Map showing depth to bedrock, Rockville Quadrangle, Connecticut},
  author = {Richard C. Hyde and Roger B. Colton},
  year = {1984},
  doi = {10.3133/mf1675a},
  url = {https://pubs.usgs.gov/publication/mf1675A},
  note = {Source identifier: mf1675A}
}