TY  - BOOK
ED  - Naciones Unidas.
TI  - World population trends and policies: 1977 monitoring report 
T2  - Population studies
AV  - HB871 W67 1979
U1  - 300 s304.6 
PY  - 1979///
CY  - New York
PB  - Naciones Unidas, Department of Economic and Social Affairs
KW  - Población
N1  - "United Nations publication. Sales no. E.78.XIII.3[-4]"; "ST/ESA SER.A/62"; v. 1; Population trends --; v. 2; Population policies
ER  -