@misc{indiciaed20cda430469,
  title = {Map and description of the mineral deposits in the Petersburg and eastern Port Alexander quadrangles, southeastern Alaska},
  author = {D. J. Grybeck and H. C. Berg and Susan M. Karl},
  year = {1984},
  doi = {10.3133/ofr84837},
  url = {https://pubs.usgs.gov/publication/ofr84837},
  note = {Source identifier: ofr84837}
}