@misc{indiciaeff66b23280fe,
  title = {Verification of geophysically determined depths to saltwater near the Herring River (Cape Cod National Seashore), Wellfleet, Massachusetts},
  author = {D.V. Fitterman and K.F. Dennehy},
  year = {1991},
  doi = {10.3133/ofr91321},
  url = {https://pubs.usgs.gov/publication/ofr91321},
  note = {Source identifier: ofr91321}
}