@misc{indiciae5a527d151761,
  title = {Reference samples for the earth sciences},
  author = {F.J. Flanagan},
  year = {1974},
  doi = {10.1016/0016-7037(74)90158-6},
  url = {https://pubs.usgs.gov/publication/70010198},
  note = {Source identifier: 70010198}
}