@misc{indiciaeb6389a6476e9,
  title = {Bedrock valleys of the New England coast as related to fluctuations of sea level},
  author = {Joseph Edwin Upson and Charles Winthrop Spencer},
  year = {1964},
  doi = {10.3133/pp454m},
  url = {https://pubs.usgs.gov/publication/pp454M},
  note = {Source identifier: pp454M}
}