Columbia subject headings:
Harvard subject headings:
Communism and psychoanalysis--Europe, Eastern--History--Congresses.
Communism and psychoanalysis--Germany (East)--History--Congresses.
Communism and psychoanalysis--Hungary--History--Congresses.
Psychoanalysis--Germany (East)--History--Congresses.
Psychoanalysis--Hungary--History--20th century--Congresses.
Princeton subject headings:
Psychoanalysis--Europe, Eastern--History--Congresses.