@misc{indiciaeb40e845f1eb5,
  title = {Generalized bedrock geologic map of west-central Vermillion District, Northern Minnesota},
  author = {P. K. Sims},
  year = {1985},
  doi = {10.3133/i1529},
  url = {https://pubs.usgs.gov/publication/i1529},
  note = {Source identifier: i1529}
}