@misc{indiciaec08274d26ea4,
  title = {Explanation of the geologic map of the Duluth Complex in the Babbitt-Hoyt Lakes area, Minnesota},
  author = {Bill Bonnichsen},
  year = {1970},
  doi = {10.3133/ofr70379},
  url = {https://pubs.usgs.gov/publication/ofr70379},
  note = {Source identifier: ofr70379}
}