TY  - RPRT
TI  - Self-directed learning: implications for dental hygiene.
AU  - J B Kirkhorn
AU  - J A Nieman
AU  - M E Shuntich
AU  - L M Gambrel
PY  - 1979
UR  - https://pubmed.ncbi.nlm.nih.gov/296919/
ID  - 296919
ER  -