Columbia subject headings:
Harvard subject headings:
Democracy--Europe--Congresses
Democracy--Germany--Congresses.
Democracy--Germany--Rhineland-Palatinate--Congresses.
Local government--Germany--Citizen participation--Congresses.
Political participation--Europe--Congresses.
Political participation--Germany--Congresses.
Political participation--Germany--Rhineland-Palatinate--Congresses.
Princeton subject headings:
Democracy--Europe--Congresses.
Democracy--Germany--Congresses.
Democracy--Germany--Rhineland-Palatinate--Congresses.
Local government--Germany--Citizen participation--Congresses.
Political participation--Europe--Congresses.
Political participation--Germany--Congresses.
Political participation--Germany--Rhineland-Palatinate--Congresses.