@misc{indiciae865433c6bb45,
  title = {Geologic map of the Iron River-Crystal Falls district, Iron County, Michigan},
  author = {Harold L. James and Carl E. Dutton and F.J. Pettijohn and Kenneth L. Wier},
  year = {1959},
  doi = {10.3133/mf225},
  url = {https://pubs.usgs.gov/publication/mf225},
  note = {Source identifier: mf225}
}