@misc{indiciae439b7b18be57,
  title = {Lead and zinc deposits of the Beetown area, Wisconsin},
  author = {Allen Van Heyl and Erwin J. Lyons and John J. Theiler},
  year = {1950},
  doi = {10.3133/ofr5039},
  url = {https://pubs.usgs.gov/publication/ofr5039},
  note = {Source identifier: ofr5039}
}