TY  - BOOK
AU  - Portmann,Michel
AU  - Portmann,D.
TI  - Otologic surgery: manual of oto-surgical techniques 
SN  - 1565939395
PY  - 1998///
CY  - San Diego
PB  - Singular
KW  - Ear Diseases
KW  - surgery
KW  - Surgical Procedures, Operative
KW  - methods
ER  -