Columbia subject headings:
Europe, Eastern--Economic policy--Congresses.
Europe, Eastern--Foreign relations--1945-1989--Congresses.
Europe, Eastern--Politics and government--1945-1989--Congresses.
Europe, Eastern--Social conditions--Congresses.
Socialism--Europe, Eastern--Congresses.
Harvard subject headings:
Europe, Eastern--Economic policy--Congresses.
Europe, Eastern--Foreign relations--1945-1989--Congresses.
Europe, Eastern--Politics and government--1945-1989--Congresses.
Europe, Eastern--Social conditions--Congresses.
Socialism--Europe, Eastern--Congresses.
Princeton subject headings:
Communist state--Congresses.
Europe, Eastern--Economic conditions--1945---Congresses.
Europe, Eastern--Foreign relations--1945-1989--Congresses.
Europe, Eastern--Politics and government--1945---Congresses.