@misc{indiciae9d193bf535ae,
  title = {Data layer integration for the national map of the united states},
  author = {E.L. Usery and M.P. Finn and M. Starbuck},
  year = {2009},
  url = {https://pubs.usgs.gov/publication/70037492},
  note = {Source identifier: 70037492}
}