Columbia subject headings:
Harvard subject headings:
Anti-communist movements--Germany (East)--History--20th century.
Anti-communist movements--Germany--Berlin--History--20th century.
Espionage--Germany (East)--History--20th century.
Government, Resistance to--Germany (East)--History--20th century.
Kampfgruppe gegen Unmenschlichkeit--History.
Princeton subject headings:
Anti-communist movements--Germany (East)--History--20th century.
Anti-communist movements--Germany--Berlin--History--20th century.
Espionage--Germany (East)--History--20th century.
Government, Resistance to--Germany (East)--History--20th century.
Kampfgruppe gegen Unmenschlichkeit--History.