TY  - BOOK
AU  - Andreasen,Jens O.
AU  - Petersen,Jens Kolsen
AU  - Laskin,Daniel M.
TI  - Textbook and color atlas of tooth impactions: diagnosis, treatment and prevention 
SN  - 0323001467
PY  - 1997///
CY  - St. Louis
PB  - Mosby
ER  -