@misc{indiciae6039dc38fc8c,
  title = {Geologic map of the Nabesna B-6 quadrangle, south-central Alaska},
  author = {Donald H. Richter and James G. Smith and H. R. Schmoll and R. L. Smith},
  year = {1993},
  doi = {10.3133/gq1688},
  url = {https://pubs.usgs.gov/publication/gq1688},
  note = {Source identifier: gq1688}
}