@misc{indiciaef8f173b86af4,
  title = {Technologic gaps in exploration and exploitation of sub-sea mineral resources},
  author = {Frank F. Wang and Michael J. Cruickshank},
  year = {1969},
  doi = {10.4043/1031-ms},
  url = {https://pubs.usgs.gov/publication/70225516},
  note = {Source identifier: 70225516}
}