@misc{indiciaef79c45bbed60,
  title = {Geologic and paleoecologic studies of the Nebraska Sand Hills},
  author = {Thomas S. Ahlbrandt and S.G. Fryberger and John H. Hanley and J. Platt Bradbury},
  year = {1980},
  doi = {10.3133/pp1120ac},
  url = {https://pubs.usgs.gov/publication/pp1120AC},
  note = {Source identifier: pp1120AC}
}