Columbia subject headings:
Older people--Congresses.
World Assembly on Aging (1982 : Vienna, Austria)
Harvard subject headings:
Aging--Congresses
Gerontology--Congresses.
Older people--Congresses.
World Assembly on Aging (1982 : Vienna, Austria)
Princeton subject headings:
Aging--Congresses.
Gerontology--Congresses.
Older people--Congresses.