@misc{indiciae98233a71b6e2,
  title = {Geomorphic, sedimentologic and chronologic analysis of the Opal dune field, Lincoln County, Wyoming},
  author = {Thomas S. Ahlbrandt and Wynn Downing},
  year = {1993},
  doi = {10.3133/ofr93687},
  url = {https://pubs.usgs.gov/publication/ofr93687},
  note = {Source identifier: ofr93687}
}