Columbia subject headings:
Harvard subject headings:
Germany (East). Ministerium für Auswärtige Angelegenheiten.
Germany--History--Unification, 1990--Historiography.
Germany--History--Unification, 1990--Sources.
Germany--Politics and government--1945-1990--Sources.
Germany--Politics and government--1990---Sources.
Princeton subject headings:
Germany--History--20th century.
Germany--History--Unification, 1990--Handbooks, manuals, etc.
Germany--History--Unification, 1990--Historiography.
Germany--Politics and government--1990-