@misc{indiciaec0b0d9ca864e,
  title = {Semi-quantitative spectrographic analysis and rank correlation in geochemistry},
  author = {F.J. Flanagan},
  year = {1957},
  doi = {10.1016/0016-7037(57)90042-x},
  url = {https://pubs.usgs.gov/publication/70009849},
  note = {Source identifier: 70009849}
}