TY  - BOOK
AU  - Powell, Nora P
AU  - Powell, Nora P
TI  - The conventional vital registration system : systems of demographic measurement data collection systems
U1  - DEM-F 001.433 P 18948 
PB  - International Program of Laboratories for Population Statistics
KW  - DEMOGRAFIA
KW  - ESTADISTICAS VITALES
KW  - DEM
N1  - Incluye bibliografía
ER  -