Columbia subject headings:
Germany (East)--Economic conditions.
Germany (East)--Foreign relations.
Germany (East)--Politics and government.
Harvard subject headings:
Germany (East)--Economic conditions.
Germany (East)--Foreign relations.
Germany (East)--Politics and government.
Princeton subject headings:
Germany (East)--Economic conditions.
Germany (East)--Foreign relations.
Germany (East)--Politics and government.