TY  - RPRT
TI  - Tannic acid for smear layer removal: pilot study with scanning electron microscope.
AU  - N C Bitter
PY  - 1989
DO  - 10.1016/0022-3913(89)90023-1
UR  - https://pubmed.ncbi.nlm.nih.gov/2724161/
ID  - 2724161
ER  -