TY  - BOOK
AU  - United NationsDepartment of Economic and Social Affairs Population Division
TI  - World Population Prospects
SN  - 92-1-151349-9
U1  - 312/Un3pp 
PY  - 2001///
CY  - Nueva York, Estados Unidos 
PB  - United Nations
KW  - ESTADISTICA VITAL
ER  -