Indications of the sanitation level in a dental clinic.

@article{Williams1976IndicationsOT,
  title={Indications of the sanitation level in a dental clinic.},
  author={Henry Neal Williams and D E Shay and John F. Hasler},
  journal={Journal of the Baltimore College of Dental Surgery},
  year={1976},
  volume={31 1},
  pages={18-34}
}