Columbia subject headings:
Harvard subject headings:
Freedom of information--Germany--Congresses.
Germany (East). Ministerium für Staatssicherheit--Records and correspondence--Congresses.
Germany. Stasi-Unterlagen-Gesetz--Congresses.
Government and the press--Germany--Congresses.
Intelligence service--Germany--Records and correspondence--Congresses.
Secret service--Germany (East)--Records and correspondence--Congresses.
Princeton subject headings:
Germany (East)--Politics and government--Congresses.
Germany (East). Ministerium für Staatssicherheit--Congresses.