TY  - RPRT
TI  - Rare earth elements in the phosphatic-enriched sediment of the Peru shelf
AU  - D.Z. Piper
AU  - P. A. Baedecker
AU  - J.G. Crock
AU  - W. C. Burnett
AU  - B.J. Loebner
PY  - 1988
DO  - 10.1016/0025-3227(88)90093-x
UR  - https://pubs.usgs.gov/publication/70013652
ID  - 70013652
ER  -