TY  - RPRT
TI  - The relationship between gingivitis and plaque levels.
AU  - M M Breuer
AU  - R S Cosgrove
PY  - 1989
DO  - 10.1902/jop.1989.60.4.172
UR  - https://pubmed.ncbi.nlm.nih.gov/2724030/
ID  - 2724030
ER  -