@misc{indiciae7cd3df7eff60,
  title = {Rare-earth analysis by a mass spectrometric stable isotope dilution technique},
  author = {Philpotts, J. A. and Schnetzler, C. C. and Thomas, H. H.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670014616},
  note = {Source identifier: 19670014616}
}