@misc{indiciaec8e6437a9f2d,
  title = {Topographic maps: Tools for planning},
  author = {George A. Kaufman},
  year = {1980},
  doi = {10.3133/70039402},
  url = {https://pubs.usgs.gov/publication/70039402},
  note = {Source identifier: 70039402}
}