@misc{indiciae3cb676a06a9a,
  title = {Bedrock geologic map showing thickness of overlying Quaternary deposits, Fremont Quadrangle and part of Omaha Quadrangle, Nebraska},
  author = {R.R. Burchett and E.C. Reed and V. H. Dreeszen and G.E. Prichard},
  year = {1975},
  doi = {10.3133/i905},
  url = {https://pubs.usgs.gov/publication/i905},
  note = {Source identifier: i905}
}