@misc{indiciae57d71194e5ea,
  title = {Reconnaissance geologic map of the Ruby quadrangle, Alaska},
  author = {J.T. Cass},
  year = {1959},
  doi = {10.3133/i289},
  url = {https://pubs.usgs.gov/publication/i289},
  note = {Source identifier: i289}
}