@misc{indiciaebc6cde4d62b8,
  title = {Allen feldspar quarry, Alstead, New Hampshire},
  author = {V.E. Shainin and K.S. Adams},
  year = {1945},
  doi = {10.3133/ofr4579},
  url = {https://pubs.usgs.gov/publication/ofr4579},
  note = {Source identifier: ofr4579}
}