TY  - GEN
AU  - Smith,Laurence C
TI  - The world in 2050: four forces shaping civilization's northern future
SN  - 9780452297470
AV  - GE 149 S654w 2011
PY  - 2011///
CY  - New York, NY
PB  - Plume Book, 
KW  - Cambios climáticos
KW  - Cambios ambiental global
ER  -