@misc{indiciae42963c0a8d21,
  title = {Alaska resource data file: Petersburg quadrangle},
  author = {D. J. Grybeck and Henry C. Berg},
  year = {1998},
  doi = {10.3133/ofr98784},
  url = {https://pubs.usgs.gov/publication/ofr98784},
  note = {Source identifier: ofr98784}
}