Columbia subject headings:
Germany (East). Ministerium für Staatssicherheit--History.
Internal security--Germany (East)--History.
Secret service--Germany (East)--History.
Sozialistische Einheitspartei Deutschlands--History.
Harvard subject headings:
Germany (East). Ministerium für Staatssicherheit--History.
Internal security--Germany (East)--History.
Secret service--Germany (East)--History
Sozialistische Einheitspartei Deutschlands--History.
Princeton subject headings:
Germany (East). Ministerium für Staatssicherheit--History.
Internal security--Germany (East)--History.
Secret service--Germany (East)--History.
Sozialistische Einheitspartei Deutschlands--History.