@misc{indiciaee6c792f8d8fb,
  title = {Space maintenance for children.},
  author = {N H OLSEN},
  year = {1952},
  doi = {10.14219/jada.archive.1953.0067},
  url = {https://pubmed.ncbi.nlm.nih.gov/13034398/},
  note = {Source identifier: 13034398}
}