Columbia subject headings:
Germany (East)--Politics and government--Congresses.
Political parties--Germany (East)--History--20th century--Congresses.
Harvard subject headings:
Germany (East)--Politics and government--Congresses.
Political parties--Germany (East)--History--20th century--Congresses.
Princeton subject headings:
Germany (East)--Politics and government--Congresses.
Germany (Territory under Allied occupation, 1945-1955 : Russian Zone)--Politics and government--Congresses.
Political parties--Germany (East)--History--20th century--Congresses.