@misc{indiciae68220705570b,
  title = {Distribution of Late Quaternary wind-deposited sand in eastern Colorado},
  author = {Richard F. Madole and D. Paco VanSistine and John A. Michael},
  year = {2005},
  doi = {10.3133/sim2875},
  url = {https://pubs.usgs.gov/publication/sim2875},
  note = {Source identifier: sim2875}
}