Columbia subject headings:
Harvard subject headings:
Beggars--Europe--History--Congresses.
Begging--Europe--History--Congresses.
Sociology, Urban--Europe--History--Congresses.
Urban poor--Europe--History--Congresses.
Princeton subject headings:
Beggars--Europe--History--Congresses.
Begging--Europe--History--Congresses.
Poor--Europe--History--Congresses.