TY  - BOOK
AU  - Burchell,Samuel C
ED  - Time-Life Books.
TI  - Age of progress
T2  - Great ages of man : a History of the World s Cultures
U1  - 901.934 
PY  - 1979///, c1966
CY  - Alexandria, VA
PB  - Time-Life Books
KW  - Progreso
KW  - Siglo XIX
N1  - Incluye bibliografía
ER  -