Columbia subject headings:
Harvard subject headings:
Germany (East). Ministerium für Staatssicherheit--Dictionaries--German.
Internal security--Germany (East)--Dictionaries--German.
Secret service--Germany (East)--Dictionaries--German.
Princeton subject headings:
Encyclopedias.
Germany (East). Ministerium für Staatssicherheit--Encyclopedias.
Internal security--Germany (East)--Encyclopedias.
Secret service--Germany (East)--Encyclopedias.