@misc{indiciae40377f163a72,
  title = {Bibliography of titanium deposits of the world},
  author = {Robert Lawthers and Helen R. Mark},
  year = {1957},
  doi = {10.3133/b1019g},
  url = {https://pubs.usgs.gov/publication/b1019G},
  note = {Source identifier: b1019G}
}