Columbia subject headings:
Harvard subject headings:
Europe, Central--Politics and government--1989---Congresses.
Europe, Eastern--Politics and government--1945-1989--Congresses.
Europe, Eastern--Politics and government--1989---Congresses.
Germany--History--Unification, 1990--Congresses.
Princeton subject headings:
Europe, Central--Politics and government--1989---Congresses.
Europe, Eastern--Politics and government--1945-1989--Congresses.
Europe, Eastern--Politics and government--1989---Congresses.
Germany--History--Unification, 1990--Congresses.