@misc{indiciaed7c679d8fa58,
  title = {A practical guide to assisted operating. 4. Instrument handling. 2.},
  author = {E Paul},
  year = {1972},
  doi = {10.1038/sj.bdj.4802924},
  url = {https://pubmed.ncbi.nlm.nih.gov/4509403/},
  note = {Source identifier: 4509403}
}