TY  - RPRT
A1  - Mason, A.
A1  - Lee, R.
A1  - Abrigo, M.
A1  - Lee, S.H.
T1  - Support ratios and demographic dividends: Estimates for the world
Y1  - 2017
PB  - United Nations
CY  - New York
T3  - Technical Paper 2017/1

ER  -