@misc{indiciae4c070a0694a2,
  title = {National atlas maps},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1996},
  doi = {10.3133/fs24595},
  url = {https://pubs.usgs.gov/publication/fs24595},
  note = {Source identifier: fs24595}
}