@misc{indiciae06dca71c6487,
  title = {Progress of geologic work in Iron and Dickinson Counties, Michigan},
  author = {Carl E. Dutton},
  year = {1950},
  doi = {10.3133/cir84},
  url = {https://pubs.usgs.gov/publication/cir84},
  note = {Source identifier: cir84}
}