Columbia subject headings:
Elections--Germany (East)--Congresses.
Elections--Germany--Congresses.
Political parties--Germany (East)--Congresses.
Political parties--Germany--Congresses.
Harvard subject headings:
Elections--Germany (East)--Congresses.
Elections--Germany--Congresses.
Political parties--Germany (East)--Congresses.
Political parties--Germany--Congresses.
Princeton subject headings:
Elections--Germany (East)--Congresses.
Elections--Germany--Congresses.
Political parties--Germany (East)--Congresses.
Political parties--Germany--Congresses.