Columbia subject headings:
Older people--Economic conditions.
Older people--Government policy.
Older people--Social conditions.
Urbanization.
Harvard subject headings:
Older people--Economic conditions--Congresses.
Older people--Government policy--Congresses.
Older people--Social conditions--Congresses.
Urbanization--Congresses
Princeton subject headings:
Older people--Economic conditions.
Older people--Government policy.
Older people--Social conditions.
Urbanization.