@misc{indiciaea0c659184058,
  title = {[Capacity for work in patients with initial pneumoconiotic changes].},
  author = {K Marek and A Kujawska and E Rogala and W Smolarz and Z Potocka-Skowronek},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/5449555/},
  note = {Source identifier: 5449555}
}