@misc{indiciae15a39c2843ff,
  title = {The Vermilion iron-bearing district of Minnesota, with an atlas},
  author = {Julius Morgan Clements},
  year = {1903},
  doi = {10.3133/m45},
  url = {https://pubs.usgs.gov/publication/m45},
  note = {Source identifier: m45}
}