TY  - BOOK
AU  - Burlingame,Roger
TI  - Machines that built America
AV  - T21 .B79
U1  - 608 
PY  - 1953///]
CY  - New York
PB  - Harcourt, Brace
KW  - Inventions
KW  - History
KW  - Local
KW  - Inventors
KW  - United States
KW  - Civilization
ER  -