@misc{indiciae2ba38cc0d719,
  title = {Bedrock geologic map of the Republic quadrangle, Marquette County, Michigan},
  author = {W.F. Cannon},
  year = {1975},
  doi = {10.3133/i862},
  url = {https://pubs.usgs.gov/publication/i862},
  note = {Source identifier: i862}
}