Columbia subject headings:
Harvard subject headings:
Older people--Government policy--Developed countries--Congresses.
Older people--Government policy--Developing countries--Congresses.
Older people--Services for--Developed countries--Congresses.
Older people--Services for--Developing countries--Congresses.
Princeton subject headings:
Older people--Government policy--Developed countries--Congresses.
Older people--Government policy--Developing countries--Congresses.
Older people--Services for--Developed countries--Congresses.
Older people--Services for--Developing countries--Congresses.