@misc{indiciae2f1ec305feec,
  title = {Isopachs of Quaternary deposits, Fremont 1- by 2- degree Quadrangle and part of Omaha Quadrangle, Nebraska, digitized from a published 1:250,000-scale geologic map},
  author = {R. B. Zelt and E.J. Patton},
  year = {1995},
  doi = {10.3133/ofr95721},
  url = {https://pubs.usgs.gov/publication/ofr95721},
  note = {Source identifier: ofr95721}
}