@misc{indiciae630e6d38c6d5,
  title = {Geologic map of Archean rocks, western Vermilion District, northern Minnesota},
  author = {P. K. Sims and D. L. Southwick},
  year = {1985},
  doi = {10.3133/i1527},
  url = {https://pubs.usgs.gov/publication/i1527},
  note = {Source identifier: i1527}
}