TY  - GEN
AU  - Jańczuk,Z
TI  - [Knowledge of the principles of oral hygiene of Polish children]
SN  - 0011-4553
PY  - 1973///0109
KW  - Child
KW  - Health Education, Dental
KW  - Humans
KW  - Oral Hygiene
KW  - Poland
KW  - Toothbrushing
N1  - Publication Type: Journal Article
ER  -