Columbia subject headings:
Gerontology--Congresses.
Old age assistance--Congresses.
Older people--Psychology--Congresses.
Harvard subject headings:
Gerontology--Congresses
Old age assistance--Congresses.
Older people--Psychology--Congresses
Princeton subject headings:
Gerontology--Congresses.
Old age assistance--Congresses.
Older people--Psychology--Congresses.