@misc{indiciae3fe5f7d64a65,
  title = {Map showing metallic mineral deposits of Missouri},
  author = {Virginia S. Neuschel and Edwin T. McKnight},
  year = {1948},
  doi = {10.3133/mb18},
  url = {https://pubs.usgs.gov/publication/mb18},
  note = {Source identifier: mb18}
}