@misc{indiciaef9c7d244fdce,
  title = {Reconnaissance geologic map of the Petersburg C-1 quadrangle, southeastern Alaska},
  author = {David A. Brew},
  year = {1997},
  doi = {10.3133/ofr97156h},
  url = {https://pubs.usgs.gov/publication/ofr97156H},
  note = {Source identifier: ofr97156H}
}