TY  - RPRT
TI  - [Study on manual toothbrushing and its evaluation. I].
AU  - L Spengler
AU  - H J Spengler
AU  - L G Lidberg
PY  - 1975
UR  - https://pubmed.ncbi.nlm.nih.gov/1060250/
ID  - 1060250
ER  -