@misc{indiciaeda97ee21ea87,
  title = {Geology and metallogeny of Archean and Proterozoic basement terranes in the northern midcontinent, U.S.A.; an overview},
  author = {P. K. Sims and Eva B. K isvarsanyi and G. B. Morey},
  year = {1987},
  doi = {10.3133/b1815},
  url = {https://pubs.usgs.gov/publication/b1815},
  note = {Source identifier: b1815}
}