@misc{indiciaeb9d36e13b5dd,
  title = {Preliminary geologic studies of cold climate dunes, North Park, Jackson County, Colorado},
  author = {Thomas S. Ahlbrandt and Sarah Andrews},
  year = {1977},
  doi = {10.3133/ofr77145},
  url = {https://pubs.usgs.gov/publication/ofr77145},
  note = {Source identifier: ofr77145}
}