TY  - BOOK
AU  - Proffit, William R.
TI  - Contemporary orthodontics
SN  - 801663938
AV  - RK 521 .P76 1993 
PY  - 1993///
CY  - [Place of publication not identifed]
PB  - [publisher not identified]
N1  - Contemporary orthodontics, Contemporary
ER  -