Columbia subject headings:
Harvard subject headings:
Communism and society--Congresses.
Communism--Europe, German-speaking--History--20th century--Congresses.
New Left--Europe, German-speaking--History--20th century--Congresses.
Princeton subject headings:
China--History--Cultural Revolution, 1966-1976--Influence--Congresses.
Communism and society--Congresses.
Communism--Europe, German-speaking--History--Congresses.
New Left--Europe, German-speaking--History--20th century--Congresses.