@misc{indiciaef0f320f04330,
  title = {The Central Kentucky Prototype; an object-oriented geologic map data model for the National Geologic Map Database},
  author = {David R. Soller and Boyan Brodaric and Jordan T. Hastings and Ron Wahl and Gerald A. Weisenfluh},
  year = {2002},
  doi = {10.3133/ofr02202},
  url = {https://pubs.usgs.gov/publication/ofr02202},
  note = {Source identifier: ofr02202}
}