@misc{indiciae45c2c540760f,
  title = {The national elevation data set},
  author = {Dean B. Gesch and Michael J. Oimoen and Susan K. Greenlee and Charles A. Nelson and Michael J. Steuck and Dean J. Tyler},
  year = {2002},
  url = {https://pubs.usgs.gov/publication/70156331},
  note = {Source identifier: 70156331}
}