@misc{indiciaea157d33de860,
  title = {The National Cartographic Information Center: An information resource on mapping products for the nation},
  author = {Alan R. Stevens},
  year = {2008},
  doi = {10.1300/j122v05n03\_03},
  url = {https://pubs.usgs.gov/publication/70013056},
  note = {Source identifier: 70013056}
}