@misc{indiciae00cdd6b6eb03,
  title = {Cobalt-rich ferromanganese crusts in the Pacific},
  author = {James R. Hein and Andrea Koschinsky and Michael Bau and Frank T. Manheim and Jung-Keuk Kang and Leanne Roberts},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70127614},
  note = {Source identifier: 70127614}
}