TY  - BOOK
AU  - "UN, International Economic and Social Affairs"
ED  - "UN, International Economic and Social Affairs"
TI  - "Demographic transition and socio-economic development, 1977"
U1  - "Y:50aX:77p1,N77, L9/UN" 
PY  - 1979///
CY  - New
PB  - York United Nations Publication    
ER  -