@misc{indiciaee8a85e09aa02,
  title = {Geologic maps of the Marquette and Sands quadrangles, Michigan},
  author = {Jacob Eugene Gair and Blair F. Jones},
  year = {1963},
  doi = {10.3133/ofr6335},
  url = {https://pubs.usgs.gov/publication/ofr6335},
  note = {Source identifier: ofr6335}
}