@misc{indiciae12e5b364d152,
  title = {Occurrence and origin of the titanium deposits of Nelson and Amherst Counties, Virginia},
  author = {C. S. Ross},
  year = {1941},
  doi = {10.3133/pp198},
  url = {https://pubs.usgs.gov/publication/pp198},
  note = {Source identifier: pp198}
}