@misc{indiciaec12fc93a664a,
  title = {Map showing Precambrian geology in parts of the Baraga, Dead River, and Clark Creek basins, Marquette and Baraga Counties, Michigan},
  author = {William F. Cannon},
  year = {1977},
  doi = {10.3133/ofr77467},
  url = {https://pubs.usgs.gov/publication/ofr77467},
  note = {Source identifier: ofr77467}
}