@misc{indiciae489874d28a91,
  title = {Census county subdivisions, 1980, Llano, Texas},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1985},
  doi = {10.3133/ofr84185},
  url = {https://pubs.usgs.gov/publication/ofr84185},
  note = {Source identifier: ofr84185}
}