@misc{indiciae1f27c5f68a15,
  title = {Semiquantitative spectrographic analysis and rank correlation in geochemistry},
  author = {Francis J. Flanagan},
  year = {1956},
  doi = {10.3133/tei628},
  url = {https://pubs.usgs.gov/publication/tei628},
  note = {Source identifier: tei628}
}