@misc{indiciaeae941afa0eb2,
  title = {Metallic mineral resources map of the Circle Quadrangle, Alaska},
  author = {E. H. Cobb},
  year = {1972},
  doi = {10.3133/mf391},
  url = {https://pubs.usgs.gov/publication/mf391},
  note = {Source identifier: mf391}
}