Columbia subject headings:
Harvard subject headings:
Assistive computer technology--Congresses.
Congregate housing--Congresses.
Medical economics--Congresses.
Older people--Care--Congresses.
Self-help devices for older people--Congresses.
Self-help devices for people with disabilities--Congresses
Princeton subject headings:
Assistive computer technology--Congresses.
Congregate housing--Congresses.
Medical economics--Congresses.
Older people--Care--Congresses.
Self-help devices for older people--Congresses.
Self-help devices for people with disabilities--Congresses.