Columbia subject headings:
Harvard subject headings:
Germany (East)--History.
Germany (East)--Politics and government.
Germany--History--1945-1990.
Germany--Politics and government--1945-1990.
Princeton subject headings:
Germany (East)--History.
Germany (East)--Politics and government.
Germany--History--1945-1990.
Germany--Politics and government--1945-1990.