Columbia subject headings:
Censorship--Germany--Berg (Duchy)
Censorship--Germany--Frankfurt (Grand Duchy)
Censorship--Germany--Westphalia (Kingdom)
Press law--Germany--Berg (Duchy)
Press law--Germany--Frankfurt (Grand Duchy)
Press law--Germany--Westphalia (Kingdom)
Harvard subject headings:
Censorship--Berg (Duchy)
Censorship--Frankfurt (Grand Duchy)
Censorship--Westphalia (Kingdom)
Press law--Berg (Duchy)
Press law--Frankfurt (Grand Duchy)
Press law--Westphalia (Kingdom)
Princeton subject headings:
Censorship--Berg (Duchy).
Censorship--Frankfurt (Grand Duchy).
Censorship--Germany--Westphalia.
Press law--Berg (Duchy).
Press law--Frankfurt (Grand Duchy).
Press law--Germany--Westphalia.