@misc{indiciae032a68c4191d,
  title = {US Topo—Topographic maps for the Nation},
  author = {Kristin A. Fishburn and William J. Carswell},
  year = {2017},
  doi = {10.3133/fs20173045},
  url = {https://pubs.usgs.gov/publication/fs20173045},
  note = {Source identifier: fs20173045}
}