@misc{indiciaead19c4181bb0,
  title = {Selected bibliography, index to geologic mapping, and preliminary compilation of bedrock geology: Boston two-degree sheet},
  author = {John D. Peper},
  year = {1978},
  doi = {10.3133/ofr78370},
  url = {https://pubs.usgs.gov/publication/ofr78370},
  note = {Source identifier: ofr78370}
}