TY  - RPRT
TI  - Testing reliability of plaque and gingival indices. Two methods.
AU  - N K Nordstrom
AU  - E L Paikoff
AU  - J Uldricks
AU  - C Solt
AU  - J Burch
AU  - F M Beck
PY  - 1988
DO  - 10.1902/jop.1988.59.4.270
UR  - https://pubmed.ncbi.nlm.nih.gov/3164378/
ID  - 3164378
ER  -