@misc{indiciaee6fe5c2051c5,
  title = {[Basic problems of preventing pneumoconiosis].},
  author = {E I Vorontsova and V V Tkachev},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/5476368/},
  note = {Source identifier: 5476368}
}