@misc{indiciaef79dd0dd7289,
  title = {The National Atlas of the United States of America},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1997},
  doi = {10.3133/fs08297},
  url = {https://pubs.usgs.gov/publication/fs08297},
  note = {Source identifier: fs08297}
}