@misc{indiciae0aa05694fed9,
  title = {Bedrock geologic map of the Marenisco-Watersmeet area, Gogebic and Ontonagon Counties, Michigan},
  author = {C.E. Fritts},
  year = {1969},
  doi = {10.3133/i576},
  url = {https://pubs.usgs.gov/publication/i576},
  note = {Source identifier: i576}
}