Columbia subject headings:
Harvard subject headings:
City planning--Europe--History--Congresses.
City planning--Germany--History--Congresses.
Municipal government--Europe--History--Congresses.
Municipal government--Germany--History--Congresses.
Public-private sector cooperation--Europe--History--Congresses.
Public-private sector cooperation--Germany--History--Congresses.
Urbanization--Europe--History--Congresses.
Urbanization--Germany--History--Congresses.
Princeton subject headings:
Local government--Germany--Congresses.
Municipal government--Germany--Congresses.