@misc{indiciae0bd5fbf8d8e3,
  title = {Topographic mapping},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2008},
  doi = {10.3133/70037969},
  url = {https://pubs.usgs.gov/publication/70037969},
  note = {Source identifier: 70037969}
}