@misc{indiciae87562fc33bd3,
  title = {Bedrock and engineering geologic maps of Bronx County and parts of New York and Queens counties, New York},
  author = {Charles A. Baskerville},
  year = {1987},
  doi = {10.3133/ofr87360},
  url = {https://pubs.usgs.gov/publication/ofr87360},
  note = {Source identifier: ofr87360}
}