@misc{indiciae9a4b636726ab,
  title = {[Selected problems concerning changes in the population age structure in Czechoslovakia in comparison with those in Poland].},
  author = {H Palach},
  year = {1988},
  url = {https://pubmed.ncbi.nlm.nih.gov/12281719/},
  note = {Source identifier: 12281719}
}