@misc{indiciae44f914da604f,
  title = {Metallic mineral-resource potential of the Rolla 1° x 2° quadrangle, Missouri, as appraised in September 1980},
  year = {1981},
  doi = {10.3133/ofr81518},
  url = {https://pubs.usgs.gov/publication/ofr81518},
  note = {Source identifier: ofr81518}
}