@misc{indiciaef3fdca90dcae,
  title = {Threshold limit values and total work load.},
  author = {R L Zielhuis},
  year = {1971},
  doi = {10.1097/00043764-197101000-00008},
  url = {https://pubmed.ncbi.nlm.nih.gov/5540587/},
  note = {Source identifier: 5540587}
}