Columbia subject headings:
Harvard subject headings:
Germany (East). Ministerium für Staatssicherheit--Archives--History.
Germany (East). Ministerium für Staatssicherheit. Abteilung XII--Archives.
Germany (East). Ministerium für Staatssicherheit. Abteilung XII--History.
Germany (East). Ministerium für Staatssicherheit. Abteilung XII--Records and correspondence.
Intelligence service--Germany (East)--Archival resources.
Secret service--Germany (East)--Archival resources.
Princeton subject headings:
Germany (East). Ministerium für Staatssicherheit--History.
Intelligence service--Germany (East)--History.
Secret service--Germany (East)--History.