Columbia subject headings:
Harvard subject headings:
Germany (East)--Politics and government--1989-1990--Congresses.
Germany (East). Volkskammer--Elections, 1990--Congresses.
Germany--History--Unification, 1990--Congresses.
Princeton subject headings:
Germany (East)--Politics and government--1989-1990--Congresses.
Germany (East). Volkskammer
Germany--History--Unification, 1990--Congresses.