@misc{indiciae823b6b3a9b93,
  title = {U.S. Geological Survey diamond drill logs, Kokomo (Tenmile) zinc-lead mining district, Colorado},
  author = {Albert Herbert Koschmann},
  year = {1949},
  doi = {10.3133/ofr5018},
  url = {https://pubs.usgs.gov/publication/ofr5018},
  note = {Source identifier: ofr5018}
}