@misc{indiciae2cbee1b62c18,
  title = {Bedrock geologic map of the southern part of the Diorite and Champion 7 1/2 minute quadrangles, Marquette County, Michigan},
  author = {William F. Cannon and John S. Klasner},
  year = {1977},
  doi = {10.3133/i1058},
  url = {https://pubs.usgs.gov/publication/i1058},
  note = {Source identifier: i1058}
}