@misc{indiciaea672986226a3,
  title = {Methodology for determining periodontal needs.},
  author = {S P Ramfjord},
  year = {1969},
  doi = {10.1902/jop.1969.40.9.524},
  url = {https://pubmed.ncbi.nlm.nih.gov/5259734/},
  note = {Source identifier: 5259734}
}