@misc{indiciae263ab94a562d,
  title = {Lead, copper, molybdenum, and zinc geochemical anomalies south of the Summitville district, Rio Grande County, Colorado},
  author = {William N. Sharp and James Louis Gualtieri},
  year = {1968},
  doi = {10.3133/cir557},
  url = {https://pubs.usgs.gov/publication/cir557},
  note = {Source identifier: cir557}
}