@misc{indiciae5a9a2bfb993a,
  title = {Elevations and Distances in the United States},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1980},
  doi = {10.3133/70039193},
  url = {https://pubs.usgs.gov/publication/70039193},
  note = {Source identifier: 70039193}
}