@misc{indiciae7cccd26978d1,
  title = {Extraction of alkalies in rocks: Modification of the J. Lawrence Smith extraction, using barium chloride as a flux},
  author = {R.E. Stevens},
  year = {2002},
  doi = {10.1021/ac50147a013},
  url = {https://pubs.usgs.gov/publication/70011104},
  note = {Source identifier: 70011104}
}