@misc{indiciae3f4872a35999,
  title = {The 20th-Century Topographic Survey as Source Data for Long-Term Landscape Studies at Local and Regional Scales},
  author = {Dalia Varanka},
  year = {2006},
  doi = {10.3133/ofr20061002},
  url = {https://pubs.usgs.gov/publication/ofr20061002},
  note = {Source identifier: ofr20061002}
}