@misc{indiciaefb9631fe9ae6,
  title = {Surficial geologic map of the Bettles quadrangle, Alaska},
  author = {Thomas D. Hamilton},
  year = {2002},
  doi = {10.3133/mf2409},
  url = {https://pubs.usgs.gov/publication/mf2409},
  note = {Source identifier: mf2409}
}