TY  - RPRT
TI  - A method for the classification of errors in dental esthetics.
AU  - R E Lombardi
PY  - 1974
DO  - 10.1016/0022-3913(74)90004-3
UR  - https://pubmed.ncbi.nlm.nih.gov/4613821/
ID  - 4613821
ER  -