@misc{indiciae6cab9e4f8b2c,
  title = {A study on proteolytic oral microorganisms.},
  author = {G Frostell and C E Nord and P O Söder},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4197019/},
  note = {Source identifier: 4197019}
}