@misc{indiciae23a5249d42b2,
  title = {Rare earth elements in the phosphatic-enriched sediment of the Peru shelf},
  author = {D.Z. Piper and P. A. Baedecker and J.G. Crock and W. C. Burnett and B.J. Loebner},
  year = {1988},
  doi = {10.1016/0025-3227(88)90093-x},
  url = {https://pubs.usgs.gov/publication/70013652},
  note = {Source identifier: 70013652}
}