@misc{indiciae80cca4c4dfdd,
  title = {Controlled atmospheres for spectrochemical analysis},
  author = {C. S. Annell},
  year = {1956},
  doi = {10.3133/tei653},
  url = {https://pubs.usgs.gov/publication/tei653},
  note = {Source identifier: tei653}
}