TY  - RPRT
TI  - Acid etching patterns of primary enamel.
AU  - W G Bozalis
AU  - G W Marshall
PY  - 1977
DO  - 10.1177/00220345770560021401
UR  - https://pubmed.ncbi.nlm.nih.gov/320240/
ID  - 320240
ER  -