TY  - RPRT
TI  - Important differences in clinical data from third, second, and first generation periodontal probes.
AU  - H J Breen
AU  - P A Rogers
AU  - H C Lawless
AU  - J S Austin
AU  - N W Johnson
PY  - 1997
DO  - 10.1902/jop.1997.68.4.335
UR  - https://pubmed.ncbi.nlm.nih.gov/9150038/
ID  - 9150038
ER  -