Columbia subject headings:
Europe, Eastern--Politics and government--1945-1989--Congresses.
Human rights--Europe, Eastern--History--20th century--Congresses.
Human rights--Soviet Union--History--20th century--Congresses.
Protest movements--Europe, Eastern--History--20th century--Congresses.
Protest movements--Soviet Union--History--20th century--Congresses.
Soviet Union--Politics and government--1953-1985--Congresses.
Harvard subject headings:
Europe, Eastern--Politics and government--1945-1989--Congresses.
Human rights--Europe, Eastern--History--20th century--Congresses.
Human rights--Soviet Union--History--20th century--Congresses.
Protest movements--Europe, Eastern--History--20th century--Congresses.
Protest movements--Soviet Union--History--20th century--Congresses.
Soviet Union--Politics and government--1953-1985--Congresses.
Princeton subject headings:
Europe, Eastern--Politics and government--1945-1989--Congresses.
Human rights--Europe, Eastern--History--20th century--Congresses.
Human rights--Soviet Union--History--20th century--Congresses.
Protest movements--Europe, Eastern--History--20th century--Congresses.
Protest movements--Soviet Union--History--20th century--Congresses.
Soviet Union--Politics and government--1953-1985--Congresses.