@misc{indiciae0cd5ee9b3ce1,
  title = {Placer deposits map of central Alaska},
  author = {Edward Huntington Cobb},
  year = {1977},
  doi = {10.3133/ofr77168b},
  url = {https://pubs.usgs.gov/publication/ofr77168B},
  note = {Source identifier: ofr77168B}
}