@misc{indiciae16b02ecebb6a,
  title = {Generalized water-table map of Block Island, Rhode Island},
  author = {H.E. Johnston and A.I. Veeger},
  year = {1994},
  doi = {10.3133/ofr9249},
  url = {https://pubs.usgs.gov/publication/ofr9249},
  note = {Source identifier: ofr9249}
}