@misc{indiciaeecffc18976b9,
  title = {Portable sampler for microorganisms in incinerator stack emissions.},
  author = {D H Armstrong},
  year = {1970},
  doi = {10.1128/am.19.1.204-205.1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/5415218/},
  note = {Source identifier: 5415218}
}