@misc{indiciae7bbd0d642d55,
  title = {The United States 1998},
  author = {W. C. Butterman and L. McCartan and D.E. Morse and S.F. Sibley},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70021587},
  note = {Source identifier: 70021587}
}