TY  - BOOK
AU  - Boyd,Maurice
AU  - Worcester,Donald Emmet
AU  - Carman,Harry J.
TI  - American civilization: an introduction to the social sciences 
U1  - 309.1/73 
PY  - 1969///
CY  - Boston, Massachusetts
PB  - Allyn and Bacon
N1  - Incluye índice; Bibliografía : p. 731-755
ER  -