Columbia subject headings:
Harvard subject headings:
Communism--Germany (East)--History
Communism--Germany--History--20th century
Labor movement--Germany (East)--History.
Labor movement--Germany--History--20th century
Stalin, Joseph, 1878-1953--Influence.
Princeton subject headings:
Communism--Germany (East)--History.
Communism--Germany--History--20th century.
Labor movement--Germany (East)--History.
Labor movement--Germany--History--20th century.
Stalin, Joseph, 1878-1953--Influence.