@misc{indiciae1a261edcc08f,
  title = {Geologic map of the Cordova and Middleton Island quadrangles, southern Alaska},
  author = {G. R. Winkler and George Plafker},
  year = {1993},
  doi = {10.3133/i1984},
  url = {https://pubs.usgs.gov/publication/i1984},
  note = {Source identifier: i1984}
}