@misc{indiciae6d306bd2170e,
  title = {Instruments for measuring sound.},
  author = {C R WILLIAMS},
  year = {1955},
  doi = {10.1001/archotol.1955.03830040068012},
  url = {https://pubmed.ncbi.nlm.nih.gov/13258022/},
  note = {Source identifier: 13258022}
}