@misc{indiciaec15277fe2b0c,
  title = {Geologic map and section of Little Girl Point, North Ironwood, and the northern part of Ironwood quadrangles, Michigan},
  author = {H.A. Hubbard},
  year = {1972},
  doi = {10.3133/ofr72172},
  url = {https://pubs.usgs.gov/publication/ofr72172},
  note = {Source identifier: ofr72172}
}