@misc{indiciae9f2dea1ab98e,
  title = {Calibration standards for counting asbestos.},
  author = {L W Ortiz and H J Ettinger and C I Fairchild},
  year = {1975},
  doi = {10.1080/0002889758507217},
  url = {https://pubmed.ncbi.nlm.nih.gov/1096583/},
  note = {Source identifier: 1096583}
}