Columbia subject headings:
Harvard subject headings:
Criminal justice, Administration of--Germany--Mainz (Rhineland-Palatinate)--History.
Police regulations--Germany--Mainz (Rhineland-Palatinate)--History.
Princeton subject headings:
Criminal justice, Administration of--Germany--Mainz (Rhineland-Palatinate)--History.
Police regulations--Germany--Mainz (Rhineland-Palatinate)--History.