@misc{indiciae0da33a9b6330,
  title = {Metallic mineral resources map of the Ruby Quadrangle, Alaska},
  author = {Edward H. Cobb},
  year = {1972},
  doi = {10.3133/mf405},
  url = {https://pubs.usgs.gov/publication/mf405},
  note = {Source identifier: mf405}
}