TY  - BOOK
AU  - Sommer, Ralph Frederick
TI  - Clinical endodontics: a manual of scientific endodontics: Ralph Frederick Sommer, F. Darl Ostrander and Mary C. Crowley
U1  - 616.314 
PY  - 1956///
CY  - Philadelphia
PB  - W.B. Saunders
ER  -