TY  - BK
AU  - Sadik,N.
TI  - 6 mil millones:  es hora de optar: estado de la población mundial 1999
SN  - 0-89714-560-7
PY  - 1999///
CY  - New York (USA)
PB  - FNUAP, 
KW  - Development economics and policies
KW  - Development policies
KW  - Health protection
KW  - Health services
KW  - Human population
KW  - Population change
KW  - Population density
KW  - Sociology
N1  - Tables
ER  -