@misc{indiciaeec6374a9f9a8,
  title = {Iron deposits of North America, Cuba, and Puerto Rico},
  author = {Carl E. Dutton},
  year = {1954},
  doi = {10.3133/ofr5473},
  url = {https://pubs.usgs.gov/publication/ofr5473},
  note = {Source identifier: ofr5473}
}