@misc{indiciaed2b59a6b8f33,
  title = {Topographic mapping},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1992},
  doi = {10.3133/70039398},
  url = {https://pubs.usgs.gov/publication/70039398},
  note = {Source identifier: 70039398}
}