@misc{indiciaefe721714028f,
  title = {Digital and preliminary bedrock geologic map of the Wallingford quadrangle, Vermont},
  author = {William C. Burton and Nicholas M. Ratcliffe},
  year = {2000},
  doi = {10.3133/ofr99337a},
  url = {https://pubs.usgs.gov/publication/ofr99337A},
  note = {Source identifier: ofr99337A}
}