@misc{indiciaea94e1e685b13,
  title = {Geologic map of the Gulkana A-1 quadrangle, south-central Alaska},
  author = {Donald H. Richter and W. A. Duffield and D.A. Sawyer and J.C. Ratte and H. R. Schmoll},
  year = {1994},
  doi = {10.3133/gq1728},
  url = {https://pubs.usgs.gov/publication/gq1728},
  note = {Source identifier: gq1728}
}