TY  - RPRT
TI  - [Postscript to the "Study on manual toothbrushing and its interpretation"].
AU  - L Spengler
AU  - H J Spengler
AU  - L G Lidberg
PY  - 1979
UR  - https://pubmed.ncbi.nlm.nih.gov/285530/
ID  - 285530
ER  -