TY  - BOOK
T1  - Machines that Built America
T2  - A Signet Key Book ;
A1  - Burlingame, Roger
PP  - New York
PB  - The New American library
YR  - 1955
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.154453
OP  - 166
ER  -