@misc{indiciaeccd6acf4e57f,
  title = {Geologic map index of New Hampshire and Vermont},
  author = {Willard L. McIntosh and Margaret Eister and Delores Sparks},
  year = {1978},
  doi = {10.3133/70210557},
  url = {https://pubs.usgs.gov/publication/70210557},
  note = {Source identifier: 70210557}
}