@misc{indiciaeed53a01a9acd,
  title = {Neodymium isotopic variations in seawater},
  author = {Piepgras, D. J. and Wasserburg, G. J.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810028799},
  note = {Source identifier: 19810028799}
}