@misc{indiciae205e958c7e0a,
  title = {Reports and maps of the Geological Survey released only in the open files, 1959},
  author = {Betsy A. Weld and Erwin S. Asselstine and Arthur Johnson},
  year = {1960},
  doi = {10.3133/cir428},
  url = {https://pubs.usgs.gov/publication/cir428},
  note = {Source identifier: cir428}
}