@misc{indiciae694b947f5a1e,
  title = {Zoning of ore deposits in and adjoining the Leadville District, Colorado},
  author = {G. F. Loughlin and C. H. Behre},
  year = {1934},
  doi = {10.2113/gsecongeo.29.3.215},
  url = {https://pubs.usgs.gov/publication/70221660},
  note = {Source identifier: 70221660}
}