@misc{indiciaebc4a509d8348,
  title = {Spatial data available on the web at http://mrdata.usgs.gov/},
  author = {Bruce Johnson},
  year = {2002},
  doi = {10.3133/fs07102},
  url = {https://pubs.usgs.gov/publication/fs07102},
  note = {Source identifier: fs07102}
}