Aoyama, Yuko, 1989. Comparative Socio-demographic Trends: Initial Data on Ageing Populations of OECD Countries. Restricted Document, the Group of Urban Affairs, OECD, April.
Aoyama, Yuko, 1989. Comparative Socio-demographic Trends: Initial Data on Ageing Populations of OECD Countries. Restricted Document, the Group of Urban Affairs, OECD, April.