@misc{indiciae6ae7a0e7516c,
  title = {Origin of the zinc and lead deposits of the Joplin region, Missouri, Kansas, and Oklahoma},
  author = {Claude Ellsworth Siebenthal},
  year = {1915},
  doi = {10.3133/b606},
  url = {https://pubs.usgs.gov/publication/b606},
  note = {Source identifier: b606}
}