@misc{indiciaec9a99df7f234,
  title = {A noise pollution level instrument.},
  author = {J A Hamburg},
  year = {1973},
  doi = {10.1063/1.1686012},
  url = {https://pubmed.ncbi.nlm.nih.gov/4772786/},
  note = {Source identifier: 4772786}
}