TY  - BOOK
AU  - Carroll,Peter N.
AU  - Noble,David W.
TI  - The free and the unfree: a new history of the United States 
SN  - 0-14-022038-0
U1  - 973 18
PY  - 1984///
CY  - London
PB  - Penguin Books
KW  - United States
KW  - History
KW  - Estados Unidos
KW  - Historia
ER  -