@misc{indiciae6af9c7724f72,
  title = {Airborne dust in coal mines: the sampling problem.},
  author = {W M LONG},
  year = {1953},
  doi = {10.1136/oem.10.4.241},
  url = {https://pubmed.ncbi.nlm.nih.gov/13106230/},
  note = {Source identifier: 13106230}
}