Columbia subject headings:
Harvard subject headings:
Housing policy--Portugal--Congresses.
Housing--Portugal--Congresses.
Right to housing--Portugal--Congresses.
Sociology, Urban--Portugal--Congresses.
Urban policy--Portugal--Congresses.
Princeton subject headings:
Housing policy--Portugal--Congresses.
Housing--Portugal--Congresses.
Right to housing--Portugal--Congresses.
Sociology, Urban--Portugal--Congresses.
Urban policy--Portugal--Congresses.