@misc{indiciae886f835880ba,
  title = {Geologic map of the Iron River 1? X 2? Quadrangle, Michigan and Wisconsin},
  author = {William F. Cannon},
  year = {1978},
  doi = {10.3133/ofr78342},
  url = {https://pubs.usgs.gov/publication/ofr78342},
  note = {Source identifier: ofr78342}
}