TY  - BOOK
AU  - Goldberger,John
AU  - Negretti,Giampiero
TI  - Patek Philippe steel watches
SN  - 8890532300
PY  - 2010///]
CY  - Bologna
PB  - Nuova Esperia
KW  - Patek Philippe (Firm)
KW  - Catalogs
KW  - Wrist watches
KW  - Switzerland
KW  - History
KW  - 20th century
N1  - Includes bibliographical references (page 439)
ER  -