@misc{indiciaedc9e462bde85,
  title = {Reconnaissance geologic map of the Petersburg A-3 quadrangle, southeastern Alaska},
  author = {David A. Brew},
  year = {1997},
  doi = {10.3133/ofr97156b},
  url = {https://pubs.usgs.gov/publication/ofr97156B},
  note = {Source identifier: ofr97156B}
}