@misc{indiciae19aee66b1bf2,
  title = {Preliminary geologic map showing boundaries of glacial Lake Souris, North Dakota},
  author = {Richard Walter Lemke},
  year = {1952},
  doi = {10.3133/ofr5292},
  url = {https://pubs.usgs.gov/publication/ofr5292},
  note = {Source identifier: ofr5292}
}