@misc{indiciae4ae7a6bcf314,
  title = {Preliminary digital data for part of a regional, three-dimensional map of Quaternary sediments; southern Lake Michigan area},
  author = {David R. Soller},
  year = {1991},
  doi = {10.3133/ofr91356a},
  url = {https://pubs.usgs.gov/publication/ofr91356A},
  note = {Source identifier: ofr91356A}
}