TY  - BOOK
AU  - Burlingame,Roger
TI  - Machines that built America
U1  - 973.315 
PY  - 1953///]
CY  - New York
PB  - Harcourt, Brace
KW  - Inventions
KW  - History
KW  - Inventors
KW  - United States
KW  - MCE
ER  -