@misc{indiciae3a23b0e81032,
  title = {The 3R-WL working level survey meter.},
  author = {K J Schiager},
  year = {1977},
  doi = {10.1097/00004032-197712000-00010},
  url = {https://pubmed.ncbi.nlm.nih.gov/604303/},
  note = {Source identifier: 604303}
}