@misc{indiciaee835a8405181,
  title = {Generalized geologic map of Duke Island, southeastern Alaska},
  author = {Albert Herbert Koschmann},
  year = {1954},
  doi = {10.3133/ofr54150},
  url = {https://pubs.usgs.gov/publication/ofr54150},
  note = {Source identifier: ofr54150}
}