@misc{indiciae5cd0b0f1c689,
  title = {Mineral deposits and occurrences in New Hampshire, exclusive of clay, sand and gravel, and peat},
  author = {Nancy C. Pearre and James Alfred Calkins},
  year = {1957},
  doi = {10.3133/mr6},
  url = {https://pubs.usgs.gov/publication/mr6},
  note = {Source identifier: mr6}
}