Columbia subject headings:
Harvard subject headings:
Economic policy--Political aspects--Congresses.
Germany--Economic policy--Political aspects--Congresses.
Institutional economics--Congresses.
Political parties--Economic aspects--Congresses.
Political parties--Economic aspects--Germany--Congresses.
Princeton subject headings:
Economic policy--Political aspects--Congresses.
Germany--Economic policy--Political aspects--Congresses.
Institutional economics--Congresses.
Political parties--Economic aspects--Congresses.
Political parties--Economic aspects--Germany--Congresses.