@misc{indiciae23b127051384,
  title = {Map scales},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2000},
  doi = {10.3133/fs03800},
  url = {https://pubs.usgs.gov/publication/fs03800},
  note = {Source identifier: fs03800}
}