@misc{indiciaebdc0fe9fa396,
  title = {Geologic map index of Minnesota Part B, 1953-1970},
  author = {W.L. McIntosh and Margaret Eister},
  year = {1972},
  doi = {10.3133/70175751},
  url = {https://pubs.usgs.gov/publication/70175751},
  note = {Source identifier: 70175751}
}