@misc{indiciaec4a2c0db977f,
  title = {Sampling and evaluating respirable coal mine dust.},
  author = {M Jacobson},
  year = {1972},
  doi = {10.1111/j.1749-6632.1972.tb40226.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4350435/},
  note = {Source identifier: 4350435}
}