Columbia subject headings:
Jehovah's Witnesses--Germany (East)--History--20th century.
Jehovah's Witnesses--Legal status, laws, etc.--Germany (East)
Jehovah's Witnesses--Persecutions.
Harvard subject headings:
Jehovah's Witnesses--Persecutions--Germany (East)
Princeton subject headings:
Jehovah's Witnesses--Persecutions--Germany (East).