TY  - BOOK
AU  - Burlingame,Roger
TI  - Machines that built America: Inventors behind the inventor 
U1  - 608 
PY  - 1953///
CY  - New York
PB  - Harcourt company
KW  - Inventions
KW  - Inventors
KW  - United States
KW  - Civilization
ER  -