Columbia subject headings:
Europe, Central--Politics and government--1989-
Europe, Eastern--Politics and government--1989-
Harvard subject headings:
Political science--Europe, Central--History--20th century--Congresses.
Political science--Europe, Central--History--21st century--Congresses.
Political science--Europe, Eastern--History--20th century--Congresses.
Political science--Europe, Eastern--History--21st century--Congresses.
Princeton subject headings:
Europe, Central--Politics and government--1989-
Europe, Eastern--Politics and government--1989-