Columbia subject headings:
Harvard subject headings:
Barrier-free design for older people--Congresses.
Congregate housing--Congresses.
Older people--Dwellings--Design and construction--Congresses.
Princeton subject headings:
Barrier-free design for older people--Congresses.
Congregate housing--Congresses.
Older people--Dwellings--Design and construction--Congresses.